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Dr John Taylor's Outputs (269)

Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae (2024)
Journal Article
Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae. Observatory, 144(1301), https://doi.org/10.48550/arXiv.2404.19443

V454 Aur is an eclipsing binary system containing two solar- type stars on an orbit of relatively long period (P P = 2702 d) and large eccentricity (e e = 0381). Eclipses were detected using data from the Hipparcos satellite, and a high-quality doubl... Read More about Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae.

Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout (2024)
Journal Article
Southqorth, J. (2024). Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout. Observatory, 144(1302), https://doi.org/10.48550/arXiv.2408.12955

We present a detailed analysis of the detached eclipsing binary system HO Telescopii, which contains two A-type stars in a circular orbit of period 1.613 d. We use light curves from the Transiting Exoplanet Survey Satellite (TESS), which observed HO... Read More about Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout.

Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations (2024)
Journal Article
Jennings, Z., Southworth, J., Rappaport, S. A., Borkovits, T., Handler, G., & Kurtz, D. W. (in press). Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations. Monthly Notices of the Royal Astronomical Society, Article stae1879. https://doi.org/10.1093/mnras/stae1879

Stellar theory enables us to understand the properties of stars at different stages of their evolution, and contributes to other fields of astrophysics such as galactic and exoplanet studies. Assessing the accuracy of stellar theories necessitates hi... Read More about Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations.

Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi (2024)
Journal Article
Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi. Observatory, 144(1300),

OO Peg is a detached eclipsing binary system containing two late-A-type stars in a circular orbit with a period of 2.985 d. Using published spectroscopic results and a light curve from the Transiting Exoplanet Survey Satellite (TESS) we determine the... Read More about Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi.

The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system (2024)
Journal Article
Basilicata, M., Giacobbe, P., Bonomo, A. S., Scandariato, G., Brogi, M., Singh, V., …Turrini, D. (2024). The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system. Astronomy & Astrophysics, 686, Article A127. https://doi.org/10.1051/0004-6361/202347659

Context. The atmospheric characterisation of hot and warm Neptune-size exoplanets is challenging mainly due to their relatively small radius and atmospheric scale height, which reduce the amplitude of atmospheric spectral features. The warm-Neptune H... Read More about The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system.

Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system (2024)
Journal Article
Biagiotti, F., Mancini, L., Southworth, J., Tregloan-Reed, J., Naponiello, L., Jørgensen, U. G., …Vignes, J.-P. (2024). Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system. Astronomy & Astrophysics, 685, Article A131. https://doi.org/10.1051/0004-6361/202347872

Aims. Our aim in this paper is to refine the orbital and physical parameters of the HATS-2 planetary system and study transit timing variations and atmospheric composition thanks to transit observations that span more than 10 yr and that were collect... Read More about Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system.

Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani (2024)
Journal Article
Overall, S., & Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani. Observatory, 144(1299),

CW Eri is a detached eclipsing binary system of two F-type stars with an orbital period of 2728 d. Light-curves from two sectors of observations with the Transiting Exoplanet Survey Satellite (TESS) and previously published radial-velocity data are a... Read More about Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani.

Looking for timing variations in the transits of 16 exoplanets (2024)
Journal Article
Yalçınkaya, S., Esmer, E. M., Baştürk, Ö., Muhaymin, A., Kutluay, A. C., Silistre, D. İ., …Yeşilyaprak, C. (in press). Looking for timing variations in the transits of 16 exoplanets. Monthly Notices of the Royal Astronomical Society, 530(3), 2475–2495. https://doi.org/10.1093/mnras/stae854

We update the ephemerides of 16 transiting exoplanets using our ground-based observations, new TESS data, and previously published observations including those of amateur astronomers. All these light curves were modeled by making use of a set of quan... Read More about Looking for timing variations in the transits of 16 exoplanets.

Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties (2024)
Journal Article
Tkachenko, A., Pavlovski, K., Serebriakova, N., Bowman, D. M., IJspeert, L., Gebruers, S., & Southworth, J. (2024). Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties. Astronomy & Astrophysics, 683, Article A252. https://doi.org/10.1051/0004-6361/202347793

Context. Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test for models of stellar evolution that are consistently reported... Read More about Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties.

Rediscussion of eclipsing binaries. Paper XVI. The δ Scuti / γ Dor hybrid pulsator GK Draconis (2024)
Journal Article
Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XVI. The δ Scuti / γ Dor hybrid pulsator GK Draconis. Observatory, 144(1289),

GK Dra is a detached eclipsing binary system containing two early -F stars, one evolved, in an orbit with a period of 9974 d and a small eccentricity. Its eclipsing nature was discovered using Hipparcos data, and pulsations were found in follow-up gr... Read More about Rediscussion of eclipsing binaries. Paper XVI. The δ Scuti / γ Dor hybrid pulsator GK Draconis.

Optical Monitoring of the Didymos–Dimorphos Asteroid System with the Danish Telescope around the DART Mission Impact (2023)
Journal Article
Rożek, A., Snodgrass, C., Jørgensen, U. G., Pravec, P., Bonavita, M., Rabus, M., …Castillo Baeza, N. S. (2023). Optical Monitoring of the Didymos–Dimorphos Asteroid System with the Danish Telescope around the DART Mission Impact. The Planetary Science Journal, 4(12), Article 236. https://doi.org/10.3847/psj/ad0a64

The NASA’s Double-Asteroid Redirection Test (DART) was a unique planetary defence and technology test mission, the first of its kind. The main spacecraft of the DART mission impacted the target asteroid Dimorphos, a small moon orbiting the asteroid D... Read More about Optical Monitoring of the Didymos–Dimorphos Asteroid System with the Danish Telescope around the DART Mission Impact.

The enigmatic multiple star VV Ori (2023)
Journal Article
Budding, E., Southworth, J., Pavlovski, K., Rhodes, M. D., Zihao, W., Love, T., …Alexander, M. (in press). The enigmatic multiple star VV Ori. Monthly Notices of the Royal Astronomical Society, 527(3), 6389-6405. https://doi.org/10.1093/mnras/stad3586

New photometry, including TESS data, have been combined with recent spectroscopic observations of the Orion Ib pulsating triple-star system VV Ori. This yields a revised set of absolute parameters with increased precision. Two different programs were... Read More about The enigmatic multiple star VV Ori.

Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally-perturbed p- and g-mode pulsations (2023)
Journal Article
Jennings, Z., Southworth, J., Pavlovski, K., & Van Reeth, T. (in press). Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally-perturbed p- and g-mode pulsations. Monthly Notices of the Royal Astronomical Society, 527(2), 4052-4075. https://doi.org/10.1093/mnras/stad3427

Stars that are both pulsating and eclipsing offer an important opportunity to better understand many of the physical phenomena that occur in stars, because it is possible to measure the pulsation frequencies of stars for which the masses and radii ar... Read More about Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally-perturbed p- and g-mode pulsations.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 14: THE F-TYPE SYSTEM V570 PERSEI (2023)
Journal Article
Southworth, J. (2023). REDISCUSSION OF ECLIPSING BINARIES. PAPER 14: THE F-TYPE SYSTEM V570 PERSEI. Observatory,

V570 Per is a binary star system containing two F-type stars in a 1.90 d period circular orbit. It shows shallow partial eclipses that were discovered from its Hipparcos light curve. We present an analysis of this system based on two sectors of high-... Read More about REDISCUSSION OF ECLIPSING BINARIES. PAPER 14: THE F-TYPE SYSTEM V570 PERSEI.

TOI-2084 b and TOI-4184 b: Two new sub-Neptunes around M dwarf stars (2023)
Journal Article
Barkaoui, K., Timmermans, M., Soubkiou, A., Rackham, B. V., Burgasser, A. J., Chouqar, J., …Zúñiga-Fernández, S. (2023). TOI-2084 b and TOI-4184 b: Two new sub-Neptunes around M dwarf stars. Astronomy & Astrophysics, 677, Article A38. https://doi.org/10.1051/0004-6361/202346838

We present the discovery and validation of two TESS exoplanets orbiting nearby M dwarfs: TOI-2084 b, and TOI-4184 b. We characterized the host stars by combining spectra from Shane/Kast and Magellan/FIRE, spectral energy distribution analysis, and st... Read More about TOI-2084 b and TOI-4184 b: Two new sub-Neptunes around M dwarf stars.

OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event (2023)
Journal Article
Satoh, Y. K., Koshimoto, N., Bennett, D. P., Sumi, T., Rattenbury, N. J., Suzuki, D., …Spyratos, P. (2023). OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event. Astronomical Journal, 166(3), Article 116. https://doi.org/10.3847/1538-3881/ace908

We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can... Read More about OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event.

Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, TESS, and CHEOPS photometric systems II. PHOENIX spherically symmetric stellar atmosphere models. (2023)
Journal Article
Claret, A., & Southworth, J. (2023). Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, TESS, and CHEOPS photometric systems II. PHOENIX spherically symmetric stellar atmosphere models. Astronomy & Astrophysics, 674, Article A63. https://doi.org/10.1051/0004-6361/202346478

Context. The phenomenon of limb-darkening is relevant to many topics in astrophysics, including the analysis of light curves of eclipsing binaries, optical interferometry, measurement of stellar diameters, line profiles of rotating stars, gravitation... Read More about Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, TESS, and CHEOPS photometric systems II. PHOENIX spherically symmetric stellar atmosphere models..

High-mass eclipsing binaries: A testbed for models of interior structure and evolution Accurate fundamental properties and surface chemical composition for V1034 Sco, GL Car, V573 Car, and V346 Cen??? (2023)
Journal Article
Pavlovski, K., Southworth, J., Tkachenko, A., Van Reeth, T., & Tamajo, E. (2023). High-mass eclipsing binaries: A testbed for models of interior structure and evolution Accurate fundamental properties and surface chemical composition for V1034 Sco, GL Car, V573 Car, and V346 Cen???. Astronomy & Astrophysics, 671, Article A139. https://doi.org/10.1051/0004-6361/202244980

Aims: The surface chemical compositions of stars are affected by physical processes that bring the products of thermonuclear burning to the surface. Despite their potential in helping us understand the structure and evolution of stars, elemental abun... Read More about High-mass eclipsing binaries: A testbed for models of interior structure and evolution Accurate fundamental properties and surface chemical composition for V1034 Sco, GL Car, V573 Car, and V346 Cen???.

Tidally perturbed gravity-mode pulsations in a sample of close eclipsing binaries (2023)
Journal Article
Van Reeth, T., Johnston, C., Southworth, J., Fuller, J., Bowman, D., Poniatowski, L., & Van Beeck, J. (2023). Tidally perturbed gravity-mode pulsations in a sample of close eclipsing binaries. Astronomy & Astrophysics, 671, Article A121. https://doi.org/10.1051/0004-6361/202245460

Context. Thanks to the high-precision photometry from space missions such as Kepler and TESS, tidal perturbations and tilting of pulsations have been detected in more than a dozen binary systems. However, only two of these were gravity-mode (g-mode)... Read More about Tidally perturbed gravity-mode pulsations in a sample of close eclipsing binaries.

A precise blue-optical transmission spectrum from the ground: evidence for haze in the atmosphere of WASP-74b (2023)
Journal Article
Spyratos, P., Nikolov, N. K., Constantinou, S., Southworth, J., Madhusudhan, N., Sedaghati, E., …Mancini, L. (2023). A precise blue-optical transmission spectrum from the ground: evidence for haze in the atmosphere of WASP-74b. Monthly Notices of the Royal Astronomical Society, 521(2), 2163 - 2180. https://doi.org/10.1093/mnras/stad637

We report transmission spectroscopy of the bloated hot Jupiter WASP-74b in the wavelength range from 4000 to 6200 Å. We observe two transit events with the Very Large Telescope (VLT) Focal Reducer and Spectrograph and present a new method to measure... Read More about A precise blue-optical transmission spectrum from the ground: evidence for haze in the atmosphere of WASP-74b.

Revising the properties of low mass eclipsing binary stars using TESS light curves (2023)
Journal Article
Jennings, Z., Southworth, J., Maxted, P. F. L., & Mancini, L. (2023). Revising the properties of low mass eclipsing binary stars using TESS light curves. Monthly Notices of the Royal Astronomical Society, 521(3), 3405-3420. https://doi.org/10.1093/mnras/stad519

Precise measurements of stellar parameters are required in order to develop our theoretical understanding of stellar structure. These measurements enable errors and uncertainties to be quantified in theoretical models and constrain the physical inter... Read More about Revising the properties of low mass eclipsing binary stars using TESS light curves.

Transit timing variation analysis of the low-mass brown dwarf KELT-1 b (2023)
Journal Article
Baştürk, Ö., Taylor, J., Yalçınkaya, S., Mancini, L., Esmer, E., Tekin, M., …Yeşilyaprak, C. (2023). Transit timing variation analysis of the low-mass brown dwarf KELT-1 b. Monthly Notices of the Royal Astronomical Society, 521(1), 1200-1209. https://doi.org/10.1093/mnras/stad248

We investigate whether there is a variation in the orbital period of the short-period brown dwarf-mass KELT-1 b, which is one of the best candidates to observe orbital decay. We obtain 19 high-precision transit light curves of the target using six di... Read More about Transit timing variation analysis of the low-mass brown dwarf KELT-1 b.

Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM (2023)
Journal Article
Rustamkulov, Z., Sing, D. K., Mukherjee, S., May, E. M., Kirk, J., Schlawin, E., …Zieba, S. (2023). Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM. Nature, 614, 659–663. https://doi.org/10.1038/s41586-022-05677-y

Transmission spectroscopy1,2,3 of exoplanets has revealed signatures of water vapor, aerosols, and alkali metals in a few dozen exoplanet atmospheres4,5. However, these previous inferences with the Hubble and Spitzer Space Telescopes were hindered by... Read More about Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM.

δ Scuti pulsations in the bright Pleiades eclipsing binary HD 23642 (2022)
Journal Article
Southworth, J., Murphy, S. J., & Pavlovski, K. (2022). δ Scuti pulsations in the bright Pleiades eclipsing binary HD 23642. Monthly Notices of the Royal Astronomical Society: Letters, 520(1), L53-L57. https://doi.org/10.1093/mnrasl/slad004

We announce the discovery of pulsations in HD?23642, the only bright eclipsing system in the Pleiades, based on light curves from the Transiting Exoplanet Survey Satellite (TESS). We measure 46 pulsation frequencies and attribute them to d?Scuti puls... Read More about δ Scuti pulsations in the bright Pleiades eclipsing binary HD 23642.

VLT, GROND, AND DANISH TELESCOPE OBSERVATIONS OF TRANSITS IN THE TRAPPIST-I SYSTEM (2022)
Journal Article
Southworth, J., Mancini, L., Dominik, M., Jørgensen, U., Bozza, V., Burgdorf, M., …Snodgrass, C. (2022). VLT, GROND, AND DANISH TELESCOPE OBSERVATIONS OF TRANSITS IN THE TRAPPIST-I SYSTEM. Observatory, 142, 220 - 229

TRAPPIST-1 is an ultra-cool dwarf that hosts seven known transiting planets. We present photometry of the system obtained using three telescopes at ESO La Silla (the Danish 1.54 m telescope and the 2.2 m MPI telescope) and Paranal (Unit Telescope 1 o... Read More about VLT, GROND, AND DANISH TELESCOPE OBSERVATIONS OF TRANSITS IN THE TRAPPIST-I SYSTEM.

Fundamental effective temperature measurements for eclipsing binary stars – II. The detached F-type eclipsing binary CPD-54 810 (2022)
Journal Article
Miller, N. J., Maxted, P. F. L., Graczyk, D., Tan, T. G., & Southworth, J. (2022). Fundamental effective temperature measurements for eclipsing binary stars – II. The detached F-type eclipsing binary CPD-54 810. Monthly Notices of the Royal Astronomical Society, 517(4), 5129-5143. https://doi.org/10.1093/mnras/stac2968

CPD-54 810 is a double-lined detached eclipsing binary containing two mid-F type dwarfs on an eccentric 26-d orbit. We perform a combined analysis of the extensive photometry obtained by the TESS space mission along with previously published observat... Read More about Fundamental effective temperature measurements for eclipsing binary stars – II. The detached F-type eclipsing binary CPD-54 810.

Revisiting the Transit Timing Variations in the TrES-3 and Qatar-1 Systems with TESS Data (2022)
Journal Article
Kumar Mannaday, V., Thakur, P., Southworth, J., Jiang, I., Sahu, D., Mancini, L., …Shlyapnikov, A. (2022). Revisiting the Transit Timing Variations in the TrES-3 and Qatar-1 Systems with TESS Data. Astronomical Journal, 164(5), 1-20. https://doi.org/10.3847/1538-3881/ac91c2

We present and analyze 58 transit light curves of TrES-3b and 98 transit light curves of Qatar-1b, observed by the Transiting Exoplanet Survey Satellite, plus two transit light curves of Qatar-1b, observed by us, using a ground-based 1.23 m telescope... Read More about Revisiting the Transit Timing Variations in the TrES-3 and Qatar-1 Systems with TESS Data.

Surface brightness-colour relations of dwarf stars from detached eclipsing binaries I. Calibrating sample (2022)
Journal Article
Graczyk, D., Pietrzynski, G., Galan, C., Southworth, J., Gieren, W., Kaluszynski, M., …Wielgorski, P. (2022). Surface brightness-colour relations of dwarf stars from detached eclipsing binaries I. Calibrating sample. Astronomy & Astrophysics, 666, 1-17. https://doi.org/10.1051/0004-6361/202244122

Aims. Surface brightness – colour relations (SBCRs) are very useful tools for predicting the angular diameters of stars. They offer the possibility to calculate very precise spectrophotometric distances by the eclipsing binary method or the Baade-Wes... Read More about Surface brightness-colour relations of dwarf stars from detached eclipsing binaries I. Calibrating sample.

Identification of carbon dioxide in an exoplanet atmosphere (2022)
Journal Article
Ahrer, E., Wheatley, P. J., Alderson, L., Wakeford, H. R., Grant, D., Batalha, N. M., …Zhang, X. (2022). Identification of carbon dioxide in an exoplanet atmosphere. Nature, 614, 649-652. https://doi.org/10.1038/s41586-022-05269-w

Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (i.e., elements heavier than helium, also called "metallicity"), and thus... Read More about Identification of carbon dioxide in an exoplanet atmosphere.

The GAPS Programme at TNG XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems (2022)
Journal Article
Mancini, L., Esposito, M., Covino, E., Southworth, J., Poretti, E., Andreuzzi, G., …Piotto, G. (2022). The GAPS Programme at TNG XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems. Astronomy & Astrophysics, 664, Article A162. https://doi.org/10.1051/0004-6361/202243742

Context. The measurement of the spin-orbit alignment of hot Jupiters, including a range of orbital and physical properties, can provide information about the evolution of the orbits of this special class of giant planets.

Aims. We aim to refine th... Read More about The GAPS Programme at TNG XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems.

Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, and TESS photometric systems (2022)
Journal Article
Claret, A., & Southworth, J. (2022). Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, and TESS photometric systems. Astronomy & Astrophysics, 664, Article A128. https://doi.org/10.1051/0004-6361/202243827

Context. Limb darkening is an important stellar phenomenon and must be accounted for in the study of stellar spectra, eclipsing binaries, transiting planetary systems, and microlensing events. The power-2 limb-darkening law provides a good match to t... Read More about Power-2 limb-darkening coefficients for the uvby, UBVRIJHK, SDSS ugriz, Gaia, Kepler, and TESS photometric systems.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 10: THE PULSATING B-TYPE SYSTEM V1388 ORIONIS (2022)
Journal Article
Southworth, J., & Bowman, D. M. (2022). REDISCUSSION OF ECLIPSING BINARIES. PAPER 10: THE PULSATING B-TYPE SYSTEM V1388 ORIONIS. Observatory, 142, 161 - 173. https://doi.org/10.48550/arXiv.2205.08841+Focus+to+learn+more

V1388 Ori is an early-B type detached eclipsing binary whose physical properties have previously been measured from dedicated spectroscopy and a ground-based survey light curve. We reconsider the properties of the system using newly-available light c... Read More about REDISCUSSION OF ECLIPSING BINARIES. PAPER 10: THE PULSATING B-TYPE SYSTEM V1388 ORIONIS.

Four bright eclipsing binaries with γ Doradus pulsating components: CM Lac, MZ Lac, RX Dra, and V2077 Cyg (2022)
Journal Article
Southworth, J., & Van Reeth, T. (2022). Four bright eclipsing binaries with γ Doradus pulsating components: CM Lac, MZ Lac, RX Dra, and V2077 Cyg. Monthly Notices of the Royal Astronomical Society, 515(2), 2755-2765. https://doi.org/10.1093/mnras/stac1993

The study of pulsating stars in eclipsing binaries holds the promise of combining two different ways of measuring the physical properties of a star to obtain improved constraints on stellar theory. Gravity (g) mode pulsations such as those found in γ... Read More about Four bright eclipsing binaries with γ Doradus pulsating components: CM Lac, MZ Lac, RX Dra, and V2077 Cyg.

Precision measurement of a brown dwarf mass in a binary system in the microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035 (2022)
Journal Article
Herald, A., Udalski, A., Bozza, V., Rota, P., Bond, I., Yee, J., …Pogge, R. (2022). Precision measurement of a brown dwarf mass in a binary system in the microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035. Astronomy & Astrophysics, 663, Article A100. https://doi.org/10.1051/0004-6361/202243490

Context. Brown dwarfs are transition objects between stars and planets that are still poorly understood, for which several competing mechanisms have been proposed to describe their formation. Mass measurements are generally difficult to carry out for... Read More about Precision measurement of a brown dwarf mass in a binary system in the microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035.

A search for transit timing variations in the HATS-18 planetary system (2022)
Journal Article
Southworth, J., Barker, A. J., Hinse, T. C., Jongen, Y., Dominik, M., Jørgensen, U. G., …Spyratos, P. (2022). A search for transit timing variations in the HATS-18 planetary system. Monthly Notices of the Royal Astronomical Society, 515(3), 3212-3223. https://doi.org/10.1093/mnras/stac1931

HATS-18 b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We present extensive photometry of HATS-18 from which we measure 27 times of... Read More about A search for transit timing variations in the HATS-18 planetary system.

Physical properties of near-Earth asteroid (2102) Tantalus from multiwavelength observations (2022)
Journal Article
Rożek, A., Lowry, S. C., Rozitis, B., Dover, L. R., Taylor, P. A., Virkki, A., …Southworth, J. (2022). Physical properties of near-Earth asteroid (2102) Tantalus from multiwavelength observations. Monthly Notices of the Royal Astronomical Society, 515(3), 4551 - 4564. https://doi.org/10.1093/mnras/stac1835

Between 2010 and 2017, we have collected new optical and radar observations of the potentially hazardous asteroid (2102) Tantalus from the ESO NTT and Danish telescopes at the La Silla Observatory, and from the Arecibo planetary radar. The object app... Read More about Physical properties of near-Earth asteroid (2102) Tantalus from multiwavelength observations.

Fundamental effective temperature measurements for eclipsing binary stars – III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31 (2022)
Journal Article
Maxted, P. F. L., Miller, N. J., Hoyer, S., Adibekyan, V., Sousa, S. G., Billot, N., …Walton, N. (2022). Fundamental effective temperature measurements for eclipsing binary stars – III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31. Monthly Notices of the Royal Astronomical Society, 513(4), 6042-6057. https://doi.org/10.1093/mnras/stac1270

EBLM J0113+31 is a moderately bright (V = 10.1), metal-poor ([Fe/H] approximate to-0.3) GOV star with a much fainter M dwarf companion on a wide, eccentric orbit (= 14.3 d). We have used near-infrared spectroscopy obtained with the SPIRou spectrograp... Read More about Fundamental effective temperature measurements for eclipsing binary stars – III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31.

High-mass pulsators in eclipsing binaries observed using TESS (2022)
Journal Article
Southworth, J., & Bowman, D. M. (2022). High-mass pulsators in eclipsing binaries observed using TESS. Monthly Notices of the Royal Astronomical Society, 513(3), 3191-3209. https://doi.org/10.1093/mnras/stac875

Pulsations and binarity are both common features of massive stars. The study of pulsating massive stars in eclipsing binary systems holds great potential for constraining stellar structure and evolution theory. However, prior to the all-sky Transitin... Read More about High-mass pulsators in eclipsing binaries observed using TESS.

V456 Cyg: An eclipsing binary with tidally perturbed g-mode pulsations (2022)
Journal Article
Van Reeth, T., Southworth, J., Van Beeck, J., & Bowman, D. M. (2022). V456 Cyg: An eclipsing binary with tidally perturbed g-mode pulsations. Astronomy & Astrophysics, 659, Article ARTN A177. https://doi.org/10.1051/0004-6361/202142833

Context. Many well-known bright stars have been observed by the ongoing transiting exoplanet survey satellite (TESS) space mission. For several of them, these new data reveal previously unobserved variability, such as tidally perturbed pulsations in... Read More about V456 Cyg: An eclipsing binary with tidally perturbed g-mode pulsations.

Homogeneous transit timing analyses of ten exoplanet systems (2022)
Journal Article
Baştürk, Ö., Esmer, E. M., Yalçınkaya, S., Torun, Ş., Mancini, L., Helweh, F., …Yelkenci, K. (2022). Homogeneous transit timing analyses of ten exoplanet systems. Monthly Notices of the Royal Astronomical Society, 512(2), 2062-2081. https://doi.org/10.1093/mnras/stac592

We study the transit timings of 10 exoplanets in order to investigate potential transit timing variations in them. We model their available ground-based light curves, some presented here and others taken from the literature, and homogeneously measure... Read More about Homogeneous transit timing analyses of ten exoplanet systems.

THE TRANSITING PLANETARY SYSTEM WASP-86/KELT-12: TESS PROVIDES THE CASTING VOTE (2022)
Journal Article
Southworth, J., & Faedi, F. (2022). THE TRANSITING PLANETARY SYSTEM WASP-86/KELT-12: TESS PROVIDES THE CASTING VOTE. Observatory, 142, 1 - 10

A transiting planetary system was discovered independently by two groups, under the names WASP-86 (Faedi et al.1) and KELT12 (Stevens et al.2). The properties of the system determined in these works were very different, most tellingly a variation of... Read More about THE TRANSITING PLANETARY SYSTEM WASP-86/KELT-12: TESS PROVIDES THE CASTING VOTE.

An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing (2022)
Journal Article
Sahu, K. C., Anderson, J., Casertano, S., Bond, H. E., Udalski, A., Dominik, M., …Collaboration, R. (2022). An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing. Astrophysical Journal, 933(1),

We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t_E ~ 270 days), high-magnif... Read More about An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing.

Parameters of the eclipsing binary a Draconis observed by TESS and SONG (2022)
Journal Article
Hey, D. R., Kochoska, A., Monier, R., Kochukhov, O., Johnston, C., Bedding, T. R., …Pallé, P. L. (2022). Parameters of the eclipsing binary a Draconis observed by TESS and SONG. Monthly Notices of the Royal Astronomical Society, 511(2), 2648-2658. https://doi.org/10.1093/mnras/stac020

We present an analysis of the eclipsing single-lined spectroscopic binary system a Dra based on photometry from the Transiting Exoplanet Survey Satellite (TESS) mission and newly acquired spectroscopic measurements. Recently discovered to have eclips... Read More about Parameters of the eclipsing binary a Draconis observed by TESS and SONG.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 7: DELTA SCUTI, GAMMA DORADUS, AND TIDALLY-PERTURBED PULSATIONS IN RR LYNCIS (2021)
Journal Article
Taylor. (2021). REDISCUSSION OF ECLIPSING BINARIES. PAPER 7: DELTA SCUTI, GAMMA DORADUS, AND TIDALLY-PERTURBED PULSATIONS IN RR LYNCIS. Observatory, 141, 282

RR Lyn is a detached eclipsing binary with a 9.95 d orbit containing two A-stars: one metallic-lined and one possibly metal-poor. We use the light curve from the TESS satellite and two sets of published radial velocity measurements to determine the p... Read More about REDISCUSSION OF ECLIPSING BINARIES. PAPER 7: DELTA SCUTI, GAMMA DORADUS, AND TIDALLY-PERTURBED PULSATIONS IN RR LYNCIS.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 6: THE F-TYPE SYSTEM V505 PERSEI (2021)
Journal Article
Taylor. (2021). REDISCUSSION OF ECLIPSING BINARIES. PAPER 6: THE F-TYPE SYSTEM V505 PERSEI. Observatory, 141(1295), 234 - 245. https://doi.org/10.48550/arXiv.2106.04323

V505 Per is a detached eclipsing binary containing two F5 V stars in a 4.22 d circular orbit. We use a light curve from the TESS satellite and published radial velocity measurements to establish the properties of the system to high precision. The mas... Read More about REDISCUSSION OF ECLIPSING BINARIES. PAPER 6: THE F-TYPE SYSTEM V505 PERSEI.

Space-Based Photometry of Binary Stars: From Voyager to TESS (2021)
Journal Article
Southworth, J. (2021). Space-Based Photometry of Binary Stars: From Voyager to TESS. Universe, 7(10), 369 - 369

Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968. This review traces the binary stars observed and the scientific... Read More about Space-Based Photometry of Binary Stars: From Voyager to TESS.

Large-scale changes of the cloud coverage in the E Indi Ba and Bb system (vol 498, 3881, 2020) (2021)
Journal Article
Hitchcock, J. A., Helling, C., Scholz, A., Hodosan, G., Dominik, M., Hundertmark, M., …von Essen, C. (2021). Large-scale changes of the cloud coverage in the E Indi Ba and Bb system (vol 498, 3881, 2020). Monthly Notices of the Royal Astronomical Society, 506(3), 3418-3418. https://doi.org/10.1093/mnras/stab1989

We present the results of 14 nights of I-band photometric monitoring of the nearby brown dwarf binary, ϵ Indi Ba and Bb. Observations were acquired over 2 months, with a total of close to 42 h of coverage at a typically high cadence of 1.4 min. At a... Read More about Large-scale changes of the cloud coverage in the E Indi Ba and Bb system (vol 498, 3881, 2020).

The ultra-hot-Jupiter KELT-16 b: Dynamical Evolution and Atmospheric Properties (2021)
Journal Article
Mancini, L., Southworth, J., Naponiello, L., Baştürk, Ö., Barbato, D., Biagiotti, F., …Yalçınkaya, S. (2022). The ultra-hot-Jupiter KELT-16 b: Dynamical Evolution and Atmospheric Properties. Monthly Notices of the Royal Astronomical Society, 509(1), https://doi.org/10.1093/mnras/stab2691

<jats:title>Abstract</jats:title> <jats:p>We present broad-band photometry of 30 planetary transits of the ultra-hot Jupiter KELT-16 b, using five medium-class telescopes. The transits were monitored through standard B,?V,?R,?I filters and four were... Read More about The ultra-hot-Jupiter KELT-16 b: Dynamical Evolution and Atmospheric Properties.

OGLE-2018-BLG-1185b: A Low-mass Microlensing Planet Orbiting a Low-mass Dwarf (2021)
Journal Article
Kondo, I., Yee, J. C., Bennett, D. P., Sumi, T., Koshimoto, N., Bond, I. A., …Saha, A. (2021). OGLE-2018-BLG-1185b: A Low-mass Microlensing Planet Orbiting a Low-mass Dwarf. Astronomical Journal, 162(2), Article 77. https://doi.org/10.3847/1538-3881/ac00ba

We report an analysis of the planetary microlensing event OGLE-2018-BLG-1185, which was observed by a large number of ground-based telescopes and by the Spitzer Space Telescope. The ground-based light curve indicates a low planet–host star mass ratio... Read More about OGLE-2018-BLG-1185b: A Low-mass Microlensing Planet Orbiting a Low-mass Dwarf.

Six Outbursts of Comet 46P/Wirtanen (2021)
Journal Article
Kelley, M. S. P., Farnham, T. L., Li, J., Bodewits, D., Snodgrass, C., Allen, J., …Unda-Sanzana, E. (2021). Six Outbursts of Comet 46P/Wirtanen. The Planetary Science Journal, 2(4), 131. https://doi.org/10.3847/psj/abfe11

Cometary activity is a manifestation of sublimation-driven processes at the surface of nuclei. However, cometary outbursts may arise from other processes that are not necessarily driven by volatiles. In order to fully understand nuclear surfaces and... Read More about Six Outbursts of Comet 46P/Wirtanen.

Transmission spectroscopy with VLT FORS2: a featureless spectrum for the low-density transiting exoplanet WASP-88b (2021)
Journal Article
Spyratos, P., Nikolov, N., Southworth, J., Constantinou, S., Madhusudhan, N., Carter, A. L., …Mikal-Evans, T. (2021). Transmission spectroscopy with VLT FORS2: a featureless spectrum for the low-density transiting exoplanet WASP-88b. Monthly Notices of the Royal Astronomical Society, 506(2), 2853-2870. https://doi.org/10.1093/mnras/stab1847

We present ground-based optical transmission spectroscopy of the low-density hot Jupiter WASP-88b covering the wavelength range 4413 - 8333 Å with the FORS2 spectrograph on the Very Large Telescope. The FORS2 white light curves exhibit a significant... Read More about Transmission spectroscopy with VLT FORS2: a featureless spectrum for the low-density transiting exoplanet WASP-88b.

Rediscussion of eclipsing binaries. Paper V. The triple system V455 Aurigae (2021)
Journal Article
Southworth, J. (2021). Rediscussion of eclipsing binaries. Paper V. The triple system V455 Aurigae. Observatory, 141(1283), 190-203

V455 Aur is a detached eclipsing binary containing two F-stars in a 3.15-d orbit with a small eccentricity. Its eclipses were discovered in data from the Hipparcos satellite and a spectroscopic orbit was obtained by Griffin (2001, 2013). Griffin foun... Read More about Rediscussion of eclipsing binaries. Paper V. The triple system V455 Aurigae.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 4: THE EVOLVED G-TYPE SYSTEM AN CAMELOPARDALIS (2021)
Journal Article
Taylor. (2021). REDISCUSSION OF ECLIPSING BINARIES. PAPER 4: THE EVOLVED G-TYPE SYSTEM AN CAMELOPARDALIS. Observatory, 141, 122 - 133

AN Cam is a little-studied eclipsing binary containing somewhat evolved components in an orbit with a period of 21(d).0 and an eccentricity of 0.47. A spectroscopic orbit based on photoelectric radial velocities was published in 1977. AN Cam has been... Read More about REDISCUSSION OF ECLIPSING BINARIES. PAPER 4: THE EVOLVED G-TYPE SYSTEM AN CAMELOPARDALIS.

The surface brightness–colour relations based on eclipsing binary stars and calibrated with Gaia EDR3 (2021)
Journal Article
Graczyk, D., Pietrzyński, G., Gałan, C., Gieren, W., Tkachenko, A., Anderson, R., …Konorski, P. (2021). The surface brightness–colour relations based on eclipsing binary stars and calibrated with Gaia EDR3. Astronomy & Astrophysics, 649, Article A109. https://doi.org/10.1051/0004-6361/202140571

Aims. The surface brightness–colour relation (SBCR) is a basic tool for establishing precise and accurate distances within the Local Group. Detached eclipsing binary stars with accurately determined radii and trigonometric parallaxes allow calibratio... Read More about The surface brightness–colour relations based on eclipsing binary stars and calibrated with Gaia EDR3.

The Nature of the Eccentric Double-lined Eclipsing Binary System KIC 2306740 with Kepler Space Photometry (2021)
Journal Article
Kocak, D., Yakut, K., Southworth, J., Eggleton, P. P., Icli, T., Tout, C. A., & Bloemen, S. (2021). The Nature of the Eccentric Double-lined Eclipsing Binary System KIC 2306740 with Kepler Space Photometry. Astrophysical Journal, 910(2), Article 111. https://doi.org/10.3847/1538-4357/abe546

We present a detailed study of KIC 2306740, an eccentric double-lined eclipsing binary system. Kepler satellite data were combined with spectroscopic data obtained with the 4.2 m William Herschel Telescope (WHT). This allowed us to determine precise... Read More about The Nature of the Eccentric Double-lined Eclipsing Binary System KIC 2306740 with Kepler Space Photometry.

Rediscussion Of Eclipsing Binaries. Paper 2: The Eccentric Solar-type System KX Cancri (2021)
Journal Article
Taylor. (2021). Rediscussion Of Eclipsing Binaries. Paper 2: The Eccentric Solar-type System KX Cancri. Observatory, 141, 22 - 31

KX Cancri is an eclipsing binary containing two G-type stars with an orbital period of 31.2 d and an eccentricity of 0.47. These qualities make it a promising candidate for a benchmark solar-type binary system. We analyse the first light curve of thi... Read More about Rediscussion Of Eclipsing Binaries. Paper 2: The Eccentric Solar-type System KX Cancri.

A ß?Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV?Orionis (2020)
Journal Article
Southworth, J., Bowman, D. M., & Pavlovski, K. (2021). A ß?Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV?Orionis. Monthly Notices of the Royal Astronomical Society: Letters, 501(1), L65 - L70. https://doi.org/10.1093/mnrasl/slaa197

We present an analysis of the high-mass eclipsing binary system VV?Ori based on photometry from the TESS satellite. The primary star (B1?V, 9.5?M??) shows ß?Cephei pulsations and the secondary (B7?V, 3.8?M??) is possibly a slowly pulsating B star. We... Read More about A ß?Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV?Orionis.

Rediscussion Of Eclipsing Binaries. Paper I: The Totally-eclipsing B-type System Zeta Phoenicis (2020)
Journal Article
Taylor. (2020). Rediscussion Of Eclipsing Binaries. Paper I: The Totally-eclipsing B-type System Zeta Phoenicis. Observatory, 140, 247 -262

zeta Phe is a bright binary system containing B6 V and B8 V stars. It has deep total and annular eclipses, a slightly eccentric orbit with a period of I-d.669, apsidal motion, and a third body on a wider orbit. The Transiting Exoplanet Survey Satelli... Read More about Rediscussion Of Eclipsing Binaries. Paper I: The Totally-eclipsing B-type System Zeta Phoenicis.

A white dwarf bound to the transiting planetary system WASP-98 (2020)
Journal Article
Southworth, J., Tremblay, P., Gänsicke, B. T., Evans, D., & Močnik, T. (2020). A white dwarf bound to the transiting planetary system WASP-98. Monthly Notices of the Royal Astronomical Society, 497(4), 4416 - 4422. https://doi.org/10.1093/mnras/staa2328

WASP-98 is a planetary system containing a hot Jupiter transiting a late-G dwarf. A fainter star 12? distant has previously been identified as a white dwarf, with a distance and proper motion consistent with a physical association with the planetary... Read More about A white dwarf bound to the transiting planetary system WASP-98.

OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk (2020)
Journal Article
Hirao, Y., Bennett, D. P., Ryu, Y., Koshimoto, N., Udalski, A., Yee, J. C., …Kandori, R. (2020). OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk. Astronomical Journal, 160(2), Article 74. https://doi.org/10.3847/1538-3881/ab9ac3

We report the discovery and analysis of the planetary microlensing event OGLE-2017-BLG-0406, which was observed both from the ground and by the Spitzer satellite in a solar orbit. At high magnification, the anomaly in the light curve was densely obse... Read More about OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk.

Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1 (2020)
Journal Article
Bohn, A. J., Kenworthy, M. A., Ginski, C., Rieder, S., Mamajek, E. E., Meshkat, T., …Southworth, J. (2020). Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1. Astrophysical Journal, 898, Article L16. https://doi.org/10.3847/2041-8213/aba27e

Even though tens of directly imaged companions have been discovered in the past decades, the number of directly confirmed multiplanet systems is still small. Dynamical analysis of these systems imposes important constraints on formation mechanisms of... Read More about Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1.

A Holistic and Probabilistic Approach to the Ground-based and Spaceborne Data of HAT-P-19 System (2020)
Journal Article
Baştürk, Ö., Yalçınkaya, S., Esmer, E. M., Tanrıverdi, T., Mancini, L., Daylan, T., …Keten, B. (2020). A Holistic and Probabilistic Approach to the Ground-based and Spaceborne Data of HAT-P-19 System. Monthly Notices of the Royal Astronomical Society, 496(4), 4174-4190. https://doi.org/10.1093/mnras/staa1758

We update the main physical and orbital properties of the transiting hot Saturn planet HAT-P-19 b, based on a global modelling of high-precision transit and occultation light curves, taken with ground-based and space telescopes, archive spectra and r... Read More about A Holistic and Probabilistic Approach to the Ground-based and Spaceborne Data of HAT-P-19 System.

The TESS light curve of AI Phoenicis (2020)
Journal Article
Maxted, P. F. L., Gaulme, P., Graczyk, D., Hełminiak, K. G., Johnston, C., Orosz, J. A., …Chaplin, W. J. (2020). The TESS light curve of AI Phoenicis. Monthly Notices of the Royal Astronomical Society, 498(1), 332-343. https://doi.org/10.1093/mnras/staa1662

Accurate masses and radii for normal stars derived from observations of detached eclipsing binary stars are of fundamental importance for testing stellar models and may be useful for calibrating free parameters in these model if the masses and radii... Read More about The TESS light curve of AI Phoenicis.

Large-scale changes of the cloud coverage in the e Indi Ba,Bb system (2020)
Journal Article
Hitchcock, J. A., Helling, C., Scholz, A., Hodosan, G., Dominik, M., Hundertmark, M., …Collaboration, T. M. (2020). Large-scale changes of the cloud coverage in the e Indi Ba,Bb system. Monthly Notices of the Royal Astronomical Society, 495(4), 3881-3899. https://doi.org/10.1093/mnras/staa1344

We present the results of 14 nights of I-band photometric monitoring of the nearby brown dwarf binary, e Indi Ba,Bb. Observations were acquired over 2 months, and total close to 42 hours of coverage at a typically high cadence of 1.4 minutes. At a se... Read More about Large-scale changes of the cloud coverage in the e Indi Ba,Bb system.

Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni (2020)
Journal Article
Southworth, J., Bowman, D. M., Tkachenko, A., & Pavlovski, K. (2020). Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni. Monthly Notices of the Royal Astronomical Society: Letters, 497(1), L19–L23. https://doi.org/10.1093/mnrasl/slaa091

V453 Cyg is an eclipsing binary containing 14 and 11 $\, \rm M_ødot$ stars in an eccentric short-period orbit. We have discovered ß Cep-type pulsations in this system using Transiting Exoplanet Survey Satellite data. We identify seven significant pul... Read More about Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni.

The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses (2020)
Journal Article
Tkachenko, A., Pavlovski, K., Johnston, C., Pedersen, M., Michielsen, M., Bowman, D., …Aerts, C. (2020). The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses. Astronomy and Astrophysics, 637, Article A60. https://doi.org/10.1051/0004-6361/202037452

Context. Eclipsing, spectroscopic double-lined binary star systems are excellent laboratories for calibrating theories of stellar interior structure and evolution. Their precise and accurate masses and radii measured from binary dynamics offer model-... Read More about The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses.

Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b (2020)
Journal Article
Cooke, B. F., Pollacco, D., Almleaky, Y., Barkaoui, K., Benkhaldoun, Z., Blake, J. A., …Alikakos, J. (2020). Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b. Astronomical Journal, 159(6), Article 255. https://doi.org/10.3847/1538-3881/ab88db

We report the discovery of two transiting exoplanets from the WASP survey, WASP-150b and WASP-176b. WASP-150b is an eccentric (e = 0.38) hot Jupiter on a 5.6 day orbit around a V = 12.03, F8 main-sequence host. The host star has a mass and radius of... Read More about Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b.

A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions (2020)
Journal Article
Southworth, J., Bohn, A., Kenworthy, M., Ginski, C., & Mancini, L. (2020). A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions. Astronomy & Astrophysics, 635, Article A74. https://doi.org/10.1051/0004-6361/201937334

Context. Binarity is a widespread phenomenon around solar-type stars, including the host stars of transiting extrasolar planets.

Aims. We performed a detailed study of six transiting planetary systems with relatively bright stars close enough to a... Read More about A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions.

A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE (2020)
Journal Article
Bohn, A., Southworth, J., Ginski, C., Kenworthy, M., Maxted, P., & Evans, D. (2020). A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE. Astronomy & Astrophysics, 635, Article A73. https://doi.org/10.1051/0004-6361/201937127

Context. Many main-sequence stars are part of multiple systems. The effect of stellar multiplicity on planet formation and migration, however, is poorly understood.

Aims. We study the multiplicity of stars hosting known transiting extra-solar plan... Read More about A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE.

Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge (2020)
Journal Article
Zang, W., Shvartzvald, Y., Wang, T., Udalski, A., Lee, C., Sumi, T., …The MiNDSTEp Collaboration. (in press). Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge. Astrophysical Journal, 891(1), 3. https://doi.org/10.3847/1538-4357/ab6ff8

We report the mass and distance measurements of two single-lens events from the 2017 Spitzer microlensing campaign. The ground-based observations yield the detection of finite-source effects, and the microlens parallaxes are derived from the joint an... Read More about Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge.

OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf (2020)
Journal Article
Miyazaki, S., Sumi, T., Bennett, D. P., Udalski, A., Shvartzvald, Y., Street, R., …Verma, P. (2020). OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf. Astronomical Journal, 159(2), Article 76. https://doi.org/10.3847/1538-3881/ab64de

We present the analysis of the binary-lens microlensing event OGLE-2013-BLG-0911. The best-fit solutions indicate the binary mass ratio of q ≃ 0.03, which differs from that reported in Shvartzvald et al. The event suffers from the well-known close/wi... Read More about OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf.

The highly inflated giant planet WASP-174b (2020)
Journal Article
Mancini, L., Sarkis, P., Henning, T., Bakos, G., Bayliss, D., Bento, J., …Tan, T. (2020). The highly inflated giant planet WASP-174b. Astronomy & Astrophysics, 633, Article A30. https://doi.org/10.1051/0004-6361/201936532

The transiting exoplanetary system WASP-174 was reported to be composed by a main-sequence F star (V = 11.8 mag) and a giant planet, WASP-174b (orbital period P-orb = 4.23 days). However only an upper limit was placed on the planet mass (<1.3 M-Jup),...

OGLE-2015-BLG-1649Lb: A Gas Giant Planet around a Low-mass Dwarf (2019)
Journal Article
Nagakane, M., Lee, C., Koshimoto, N., Suzuki, D., Udalski, A., Beaulieu, J., …Rahvar, S. (2019). OGLE-2015-BLG-1649Lb: A Gas Giant Planet around a Low-mass Dwarf. Astronomical Journal, 158(5), Article 212. https://doi.org/10.3847/1538-3881/ab4881

We report the discovery of an exoplanet from the analysis of the gravitational microlensing event OGLE-2015-BLG-1649 that challenges the core accretion model of planet formation and appears to support the disk instability model. The planet/host-star... Read More about OGLE-2015-BLG-1649Lb: A Gas Giant Planet around a Low-mass Dwarf.

Transit timing variations in the WASP-4 planetary system (2019)
Journal Article
Southworth, J., Dominik, M., Jørgensen, U. G., Andersen, M. I., Bozza, V., Burgdorf, M. J., …von Essen, C. (2019). Transit timing variations in the WASP-4 planetary system. Monthly Notices of the Royal Astronomical Society, 490(3), 4230 - 4236. https://doi.org/10.1093/mnras/stz2602

Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitt... Read More about Transit timing variations in the WASP-4 planetary system.

OGLE-2017-BLG-1186: first application of asteroseismology and Gaussian processes to microlensing (2019)
Journal Article
Li, S., Zang, W., Udalski, A., Shvartzvald, Y., Huber, D., Lee, C., …Hill, K. (2019). OGLE-2017-BLG-1186: first application of asteroseismology and Gaussian processes to microlensing. Monthly Notices of the Royal Astronomical Society, 488(3), 3308-3323. https://doi.org/10.1093/mnras/stz1873

We present the analysis of the event OGLE-2017-BLG-1186 from the 2017 Spitzer microlensing campaign. This is a remarkable microlensing event because its source is photometrically bright and variable, which makes it possible to perform an asteroseismi... Read More about OGLE-2017-BLG-1186: first application of asteroseismology and Gaussian processes to microlensing.

The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey (2019)
Journal Article
Gill, S., Maxted, P., Evans, J., Evans, D., Smalley, B., Gary, B., …West, R. (2019). The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey. Astronomy & Astrophysics, 626, Article A119. https://doi.org/10.1051/0004-6361/201833054

Some M-dwarfs around F-/G-type stars have been measured to be hotter and larger than predicted by stellar evolution models. Inconsistencies between observations and models need addressing with more mass, radius and luminosity measurements of low-mass... Read More about The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey.

An analysis of binary microlensing event OGLE-2015-BLG-0060 (2019)
Journal Article
Tsapras, Y., Cassan, A., Ranc, C., Bachelet, E., Street, R., Udalski, A., …collaboration, T. M. (2019). An analysis of binary microlensing event OGLE-2015-BLG-0060. Monthly Notices of the Royal Astronomical Society, 487(4), 4603 - 4614. https://doi.org/10.1093/mnras/stz1404

We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous parts of the light curve was achieved by automated follow-up observations... Read More about An analysis of binary microlensing event OGLE-2015-BLG-0060.

SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory's 1.9-m telescope (2019)
Journal Article
Crause, L. A., Gilbank, D., van Gend, C., Worters, H. L., Sass, C., Kotze, E. J., …Burleigh, M. (2019). SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory's 1.9-m telescope. Journal of Astronomical Telescopes, Instruments, and Systems (JATIS), 5(2), Article 024007. https://doi.org/10.1117/1.jatis.5.2.024007

We report on the extensively upgraded Cassegrain spectrograph on the South African Astronomical Observatory (SAAO) 1.9-m telescope. The introduction of new collimator and camera optics, a new detector and controller, a rear-of-slit viewing camera to... Read More about SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory's 1.9-m telescope.

Qatar Exoplanet Survey: Qatar-8b, 9b, and 10b—A Hot Saturn and Two Hot Jupiters (2019)
Journal Article
Alsubai, K., Tsvetanov, Z. I., Pyrzas, S., Latham, D. W., Bieryla, A., Eastman, J., …Daassou, A. (2019). Qatar Exoplanet Survey: Qatar-8b, 9b, and 10b—A Hot Saturn and Two Hot Jupiters. Astronomical Journal, 157(6), 224 - 224. https://doi.org/10.3847/1538-3881/ab19bc

In this paper we present three new extrasolar planets from the Qatar Exoplanet Survey. Qatar-8b is a hot Saturn, with M P = 0.37 M J and R P = 1.3 R J, orbiting a solar-like star every P orb = 3.7 days. Qatar-9b is a hot Jupiter with a mass of M P =... Read More about Qatar Exoplanet Survey: Qatar-8b, 9b, and 10b—A Hot Saturn and Two Hot Jupiters.

OGLE-2018-BLG-0022: A Nearby M-dwarf Binary (2019)
Journal Article
Street, R., Bachelet, E., Tsapras, Y., Hundertmark, M., Bozza, V., Dominik, M., …Tregloan-Reed, J. (2019). OGLE-2018-BLG-0022: A Nearby M-dwarf Binary. Astronomical Journal, 157(6), Article 215. https://doi.org/10.3847/1538-3881/ab1538

We report observations of the binary microlensing event OGLE-2018-BLG-0022, provided by the Robotic Observations of Microlensing Events (ROME)/Reactive Event Assessment (REA) Survey, which indicate that the lens is a low-mass binary star consisting o... Read More about OGLE-2018-BLG-0022: A Nearby M-dwarf Binary.

Spectroscopic confirmation of the binary nature of the hybrid pulsator KIC 5709664 found with the frequency modulation method (2019)
Journal Article
Derekas, A., Murphy, S. J., Dálya, G., Szabó, R., Borkovits, T., Bókon, A., …Mészáros, S. (2019). Spectroscopic confirmation of the binary nature of the hybrid pulsator KIC 5709664 found with the frequency modulation method. Monthly Notices of the Royal Astronomical Society, 486(2), 2129-2136. https://doi.org/10.1093/mnras/stz875

We started a program to search for companions around hybrid δ Sct/γ Dor stars with the frequency modulation method using Kepler data. Our best candidate was KIC 5709664, where we could identify Fourier peaks with sidelobes, suggesting binary orbital... Read More about Spectroscopic confirmation of the binary nature of the hybrid pulsator KIC 5709664 found with the frequency modulation method.

Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry (2019)
Journal Article
Mancini, L., Southworth, J., Mollière, P., Tregloan-Reed, J., Juvan, I. G., Chen, G., …Wertz, O. (2019). Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry. Monthly Notices of the Royal Astronomical Society, 485(4), 5168-5179. https://doi.org/10.1093/mnras/stz661

We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneo... Read More about Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry.

Spitzer Microlensing Parallax for OGLE-2017-BLG-0896 Reveals a Counter-rotating Low-mass Brown Dwarf (2019)
Journal Article
Shvartzvald, Y., Yee, J. C., Skowron, J., Lee, C., Udalski, A., Calchi Novati, S., …Southworth, J. (2019). Spitzer Microlensing Parallax for OGLE-2017-BLG-0896 Reveals a Counter-rotating Low-mass Brown Dwarf. Astronomical Journal, 157(3), Article 106. https://doi.org/10.3847/1538-3881/aafe12

The kinematics of isolated brown dwarfs in the Galaxy, beyond the solar neighborhood, is virtually unknown. Microlensing has the potential to probe this hidden population, as it can measure both the mass and five of the six phase-space coordinates (a... Read More about Spitzer Microlensing Parallax for OGLE-2017-BLG-0896 Reveals a Counter-rotating Low-mass Brown Dwarf.

OGLE-2014-BLG-1186: gravitational microlensing providing evidence for a planet orbiting the foreground star or for a close binary source? (2019)
Journal Article
Dominik, M., Bachelet, E., Bozza, V., Street, R. A., Han, C., Hundertmark, M., …Kozłowski, S. (2019). OGLE-2014-BLG-1186: gravitational microlensing providing evidence for a planet orbiting the foreground star or for a close binary source?. Monthly Notices of the Royal Astronomical Society, 484(4), 5608 - 5632. https://doi.org/10.1093/mnras/stz306

Discussing the particularly long gravitational microlensing event OGLE-2014-BLG-1186 with a time-scale tE ~ 300 d, we present a methodology for identifying the nature of localised deviations from single-lens point-source light curves, which ensures t... Read More about OGLE-2014-BLG-1186: gravitational microlensing providing evidence for a planet orbiting the foreground star or for a close binary source?.

The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic (2019)
Journal Article
Osborn, H. P., Kenworthy, M., Rodriguez, J. E., de Mooij, E. J. W., Kennedy, G. M., Relles, H., …Zhou, G. (2019). The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic. Monthly Notices of the Royal Astronomical Society, 485(2), 1614-1625. https://doi.org/10.1093/mnras/stz283

PDS 110 is a young disc-hosting star in the Orion OB1A association. Two dimming events of similar depth and duration were seen in 2008 (WASP) and 2011 (KELT), consistent with an object in a closed periodic orbit. In this paper, we present data from a... Read More about The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic.

Deciphering the atmosphere of HAT-P-12b: solving discrepant results (2018)
Journal Article
Alexoudi, X., Mallonn, M., von Essen, C., Turner, J., Keles, E., Southworth, J., …Strassmeier, K. (2018). Deciphering the atmosphere of HAT-P-12b: solving discrepant results. Astronomy & Astrophysics, 620, Article A142. https://doi.org/10.1051/0004-6361/201833691

Context. Two independent investigations of the atmosphere of the hot Jupiter HAT-P-12b by two different groups resulted in discrepant solutions. Using broad-band photometry from the ground, one study found a flat and featureless transmission spectrum... Read More about Deciphering the atmosphere of HAT-P-12b: solving discrepant results.

WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts (2018)
Journal Article
Lendl, M., Anderson, D. R., Bonfanti, A., Bouchy, F., Burdanov, A., Collier Cameron, A., …West, R. G. (2019). WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts. Monthly Notices of the Royal Astronomical Society, 482(1), 301 -312. https://doi.org/10.1093/mnras/sty2667

We report the discovery of four transiting hot Jupiters, WASP-147, WASP-160B, WASP-164, and WASP-165 from the WASP survey. WASP-147b is a near Saturn-mass (MP = 0.28MJ) object with a radius of 1.11RJ orbiting a G4 star with a period of 4.6 d. WASP-16... Read More about WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts.

Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio (2018)
Journal Article
Dervişoğlu, A., Pavlovski, K., Lehmann, H., Southworth, J., & Bewsher, D. (2018). Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio. Monthly Notices of the Royal Astronomical Society, 481(4), 5660 -5674. https://doi.org/10.1093/mnras/sty2684

Algol-type binary systems are the product of rapid mass transfer between the initially more massive component to its companion. It is still unknown whether the process is conservative, or whether substantial mass is lost from the system. The history... Read More about Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio.

The Transiting Exoplanet Community Early Release Science Program for JWST (2018)
Journal Article
Bean, J. L., Stevenson, K. B., Batalha, N. M., Berta-Thompson, Z., Kreidberg, L., Crouzet, N., …Zingales, T. (2018). The Transiting Exoplanet Community Early Release Science Program for JWST. Publications of the Astronomical Society of the Pacific, 130(993), Article 114402. https://doi.org/10.1088/1538-3873/aadbf3

The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structures, and dynamics of transiting exoplanets in unprecedented detail. How... Read More about The Transiting Exoplanet Community Early Release Science Program for JWST.

Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg, and V578 Mon (2018)
Journal Article
Pavlovski, K., Southworth, J., & Tamajo, E. (2018). Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg, and V578 Mon. Monthly Notices of the Royal Astronomical Society, 481(3), 3129 -3147. https://doi.org/10.1093/mnras/sty2516

We present ten high-precision light curves of four transits in the XO-1 planetary system, obtained using u, g, r, redshifted Ha, I and z filters. We use these to measure the physical properties, orbital ephemeris, and a transmission spectrum of the p... Read More about Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg, and V578 Mon.

Physical properties and optical-infrared transmission spectrum of the giant planet XO-1 b (2018)
Journal Article
Southworth, J., Tregloan-Reed, J., Pinhas, A., Madhusudhan, N., Mancini, L., & Smith, A. M. S. (2018). Physical properties and optical-infrared transmission spectrum of the giant planet XO-1 b. Monthly Notices of the Royal Astronomical Society, 481(3), 3129-3147. https://doi.org/10.1093/mnras/sty2488

A prerequisite for probing theoretical evolutionary models for high-mass stars is the determination of stellar physical properties with a high accuracy. We do this for three binary systems containing components with masses above 10?M?: V478?Cyg, AH?C... Read More about Physical properties and optical-infrared transmission spectrum of the giant planet XO-1 b.

Infrared spectroscopy of the merger candidate KIC 9832227 (2018)
Journal Article
Pavlenko, Y., Evans, A., Banerjee, D., Southworth, J., Shahbandeh, M., & Davis, S. (2018). Infrared spectroscopy of the merger candidate KIC 9832227. Astronomy and Astrophysics, 615, Article A120. https://doi.org/10.1051/0004-6361/201832717

Context. It has been predicted that the object KIC 9832227 – a contact binary star – will undergo a merger in 2022.2±0.7.We describe the near infrared spectrum of this object as an impetus to obtain pre-merger data.
Aims. We aim to characterise (i)... Read More about Infrared spectroscopy of the merger candidate KIC 9832227.

WASP-104b is darker than charcoal (2018)
Journal Article
Močnik, T., Hellier, C., & Southworth, J. (2018). WASP-104b is darker than charcoal. Astronomical Journal, 156(2), Article 44. https://doi.org/10.3847/1538-3881/aacb26

By analyzing the K2 short-cadence data from Campaign 14, we detect phase-curve modulation in the light curve of the hot-Jupiter host star WASP-104. The ellipsoidal modulation is detected with high significance and in agreement with theoretical expect... Read More about WASP-104b is darker than charcoal.

The GAPS programme with HARPS-N at TNG XVI. Measurement of the Rossiter-McLaughlin effect of transiting planetary systems HAT-P-3, HAT-P-12, HAT-P-22, WASP-39, and WASP-60 (2018)
Journal Article
Mancini, L., Esposito, M., Covino, E., Southworth, J., Biazzo, K., Bruni, I., …Henning, T. (2018). The GAPS programme with HARPS-N at TNG XVI. Measurement of the Rossiter-McLaughlin effect of transiting planetary systems HAT-P-3, HAT-P-12, HAT-P-22, WASP-39, and WASP-60. Astronomy & Astrophysics, 613, Article A41. https://doi.org/10.1051/0004-6361/201732234

Context. The measurement of the orbital obliquity of hot Jupiters with different physical characteristics can provide clues to the mechanisms of migration and orbital evolution of this particular class of giant exoplanets.

Aims. We aim to derive t... Read More about The GAPS programme with HARPS-N at TNG XVI. Measurement of the Rossiter-McLaughlin effect of transiting planetary systems HAT-P-3, HAT-P-12, HAT-P-22, WASP-39, and WASP-60.

Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation (2018)
Journal Article
Themeßl, N., Hekker, S., Southworth, J., Beck, P. G., Pavlovski, K., Tkachenko, A., …Kallinger, T. (2018). Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation. Monthly Notices of the Royal Astronomical Society, 478(4), 4669 -4696. https://doi.org/10.1093/mnras/sty1113

Based on 1460?d of Kepler observations we perform a thorough asteroseismic study to probe the stellar parameters and evolutionary stages of three red giants in eclipsing binary systems. We present the first detailed analysis of individual oscillation... Read More about Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation.

OGLE-2017-BLG-1434Lb: Eighth q < 1 x 10(-4) Mass-Ratio Microlens Planet Confirms Turnover in Planet Mass-Ratio Function (2018)
Journal Article
Udalski, A., Ryu, Y., Sajadian, S., Gould, A., Mróz, P., Poleski, R., …von Essen, C. (2018). OGLE-2017-BLG-1434Lb: Eighth q < 1 x 10(-4) Mass-Ratio Microlens Planet Confirms Turnover in Planet Mass-Ratio Function. Acta Astronomica, 68(1), 1 -42. https://doi.org/10.32023/0001-5237/68.1.1

We report the discovery of a cold Super-Earth planet (m(p) = 4.4 +/- 0.5 M-circle plus) orbiting a low-mass (M = 0.23 +/- 0.03 M-circle dot) M dwarf at projected separation a(perpendicular to) l = 1.18 +/- 0.10 a.u., i.e., about 1.9 times the distanc... Read More about OGLE-2017-BLG-1434Lb: Eighth q < 1 x 10(-4) Mass-Ratio Microlens Planet Confirms Turnover in Planet Mass-Ratio Function.

High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016 (2018)
Journal Article
Evans, D., Southworth, J., Smalley, B., Jørgensen, U., Dominik, M., Andersen, M., …Wertz, O. (2018). High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016. Astronomy and Astrophysics, 610, Article A20. https://doi.org/10.1051/0004-6361/201731855

Context.
The formation and dynamical history of hot Jupiters is currently debated, with wide stellar binaries having been suggested as a potential formation pathway. Additionally, contaminating light from both binary companions and unassociated star... Read More about High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016.

OGLE-2016-BLG-1190Lb: The First Spitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary (2018)
Journal Article
Ryu, Y., Yee, J., Udalski, A., Bond, I., Shvartzvald, Y., Zang, W., …von Essen, C. (2018). OGLE-2016-BLG-1190Lb: The First Spitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary. Astronomical Journal, 155(1), Article 40. https://doi.org/10.3847/1538-3881/aa9be4

We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source–lens baseline... Read More about OGLE-2016-BLG-1190Lb: The First Spitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary.

Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry (2017)
Journal Article
Tregloan-Reed, J., Southworth, J., Mancini, L., Mollière, P., Ciceri, S., Bruni, I., …Henning, T. (2018). Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry. Monthly Notices of the Royal Astronomical Society, 474(4), 5485 - 5499. https://doi.org/10.1093/mnras/stx3147

We present high-precision photometry of eight separate transit events in the HAT-P-32 planetary system. One transit event was observed simultaneously by two telescopes of which one obtained a simultaneous multiband light curve in three optical bands,... Read More about Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry.

Recurring sets of recurring starspots on exoplanet-host Qatar-2 (2017)
Journal Article
Močnik, T., Southworth, J., & Hellier, C. (2017). Recurring sets of recurring starspots on exoplanet-host Qatar-2. Monthly Notices of the Royal Astronomical Society, 471(1), 394-403. https://doi.org/10.1093/mnras/stx1557

We announce the detection of recurring sets of recurring starspot occultation events in the short-cadence K2 light curve of Qatar-2, a K dwarf star transited every 1.34 d by a hot Jupiter. In total, we detect 34 individual starspot occultation events... Read More about Recurring sets of recurring starspots on exoplanet-host Qatar-2.

The GAPS Programme with HARPS-N at TNG XIII. The orbital obliquity of three close-in massive planets hosted by dwarf K-type stars: WASP-43, HAT-P-20 and Qatar-2 (2017)
Journal Article
Esposito, M., Covino, E., Desidera, S., Mancini, L., Nascimbeni, V., Zanmar Sanchez, R., …Turner, O. (2017). The GAPS Programme with HARPS-N at TNG XIII. The orbital obliquity of three close-in massive planets hosted by dwarf K-type stars: WASP-43, HAT-P-20 and Qatar-2. Astronomy & Astrophysics, 601, Article A53. https://doi.org/10.1051/0004-6361/201629720

Context. The orbital obliquity of planets with respect to the rotational axis of their host stars is a relevant parameter for the characterization of the global architecture of planetary systems and a key observational constraint to discriminate betw... Read More about The GAPS Programme with HARPS-N at TNG XIII. The orbital obliquity of three close-in massive planets hosted by dwarf K-type stars: WASP-43, HAT-P-20 and Qatar-2.

Starspots on WASP-107 and pulsations of WASP-118 (2017)
Journal Article
Močnik, T., Hellier, C., Anderson, D., Clark, B., & Taylor, J. (2017). Starspots on WASP-107 and pulsations of WASP-118. Monthly Notices of the Royal Astronomical Society, 469(2), 1622 - 1629. https://doi.org/10.1093/mnras/stx972

By analysing the K2 short-cadence photometry, we detect starspot occultation events in the light curve of WASP-107, the host star of a warm-Saturn exoplanet. WASP-107 also shows a rotational modulation with a period of 17.5 ± 1.4 d. Given that the ro... Read More about Starspots on WASP-107 and pulsations of WASP-118.

Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b (2017)
Journal Article
Alsubai, K., Mislis, D., Tsvetanov, Z. I., Latham, D. W., Bieryla, A., Buchhave, L. A., …Ciceri, S. (2017). Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b. Astronomical Journal, 153(4), Article 200. https://doi.org/10.3847/1538-3881/aa6340

We report the discovery of Qatar-3b, Qatar-4b, and Qatar-5b, three new transiting planets identified by the Qatar Exoplanet Survey. The three planets belong to the hot Jupiter family, with orbital periods of ${P}_{{\rm{Q}}3{\rm{b}}}$ = 2.50792 days,... Read More about Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b.

Detection of the Atmosphere of the 1.6 M ? Exoplanet GJ 1132 b (2017)
Journal Article
Southworth, J., Mancini, L., Madhusudhan, N., Mollière, P., Ciceri, S., & Henning, T. (2017). Detection of the Atmosphere of the 1.6 M ? Exoplanet GJ 1132 b. Astronomical Journal, 153(4), Article 191. https://doi.org/10.3847/1538-3881/aa6477

Detecting the atmospheres of low-mass, low-temperature exoplanets is a high-priority goal on the path to ultimately detecting biosignatures in the atmospheres of habitable exoplanets. High-precision HST observations of several super-Earths with equil... Read More about Detection of the Atmosphere of the 1.6 M ? Exoplanet GJ 1132 b.

From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b (2017)
Journal Article
Lam, K., Faedi, F., Brown, D., Anderson, D., Delrez, L., Gillon, M., …Wheatley, P. (2017). From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b. Astronomy and Astrophysics, 599, Article A3. https://doi.org/10.1051/0004-6361/201629403

We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18±0.02 MJ and radius 1.37±0.04 RJ. This is one of the least massive planets discovered by the WASP project. It orbits a br... Read More about From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b.

Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars (2017)
Journal Article
Pápics, P., Tkachenko, A., Van Reeth, T., Aerts, C., Moravveji, E., Van de Sande, M., …Gameiro, J. (2017). Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars. Astronomy & Astrophysics, 598, Article A74. https://doi.org/10.1051/0004-6361/201629814

Context. Massive stars are important building blocks of the Universe, and their stellar structure and evolution models are fundamental cornerstones of various fields in modern astrophysics. The precision of these models is strongly limited by our lac... Read More about Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars.

Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems (2017)
Journal Article
Triaud, A. H., Neveu-VanMalle, M., Lendl, M., Anderson, D. R., Collier Cameron, A., Delrez, L., …West, R. (2017). Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems. Monthly Notices of the Royal Astronomical Society, 467(2), 1714 - 1733. https://doi.org/10.1093/mnras/stx154

We report the detection of two new systems containing transiting planets. Both were identified by WASP as worthy transiting planet candidates. Radial velocity observations quickly verified that the photometric signals were indeed produced by two tran... Read More about Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems.

On the Determination of Transiting Planet Properties from Light and Radial Velocity Curves (2016)
Journal Article
Taylor. (2016). On the Determination of Transiting Planet Properties from Light and Radial Velocity Curves. Publications of the Astronomical Society of the Pacific, 129(972), Article 024401. https://doi.org/10.1088/1538-3873/129/972/024401

A recent publication has suggested a method to determine the masses and radii of the components of an eclipsing system using only a light curve and radial velocities of one component. If true, this would have immediate impact in expediting the study... Read More about On the Determination of Transiting Planet Properties from Light and Radial Velocity Curves.

MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay (2016)
Journal Article
Giannini, E., Schmidt, R., Wambsganss, J., Alsubai, K., Andersen, J., Anguita, T., …Zimmer, F. (2017). MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay. Astronomy & Astrophysics, 597, Article A49. https://doi.org/10.1051/0004-6361/201527422

Aims
We present V and R photometry of the gravitationally lensed quasars WFI?2033-4723 and HE?0047-1756. The data were taken by the MiNDSTEp collaboration with the 1.54 m Danish telescope at the ESO La Silla observatory from 2008 to 2012.

Methods... Read More about MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay.

WASP-20 IS A CLOSE VISUAL BINARY WITH A TRANSITING HOT JUPITER (2016)
Journal Article
Evans, D. F., Southworth, J., & Smalley, B. (2016). WASP-20 IS A CLOSE VISUAL BINARY WITH A TRANSITING HOT JUPITER. Astrophysical Journal Letters, 833, Article L19. https://doi.org/10.3847/2041-8213/833/2/L19

We announce the discovery that WASP-20 is a binary stellar system, consisting of two components separated by 0.2578 ± 0farcs0007 on the sky, with a flux ratio of 0.4639 ± 0.0015 in the K-band. It has previously been assumed that the system consists o... Read More about WASP-20 IS A CLOSE VISUAL BINARY WITH A TRANSITING HOT JUPITER.

Orbital alignment and star-spot properties in the WASP-52 planetary system (2016)
Journal Article
Mancini, L., Southworth, J., Raia, G., Tregloan-Reed, J., Mollière, P., Bozza, V., …Wertz, O. (2017). Orbital alignment and star-spot properties in the WASP-52 planetary system. Monthly Notices of the Royal Astronomical Society, 465(1), 843 - 857. https://doi.org/10.1093/mnras/stw1987

We report 13 high-precision light curves of eight transits of the exoplanet WASP-52 b, obtained by using four medium-class telescopes, through different filters, and adopting the defocussing technique. One transit was recorded simultaneously from two... Read More about Orbital alignment and star-spot properties in the WASP-52 planetary system.

Testing The Asteroseismic Scaling Relations For Red Giants With Eclipsing Binaries Observed By Kepler (2016)
Journal Article
Gaulme, P., McKeever, J., Jackiewicz, J., Rawls, M., Corsaro, E., Mosser, B., …Deshpande, R. (2016). Testing The Asteroseismic Scaling Relations For Red Giants With Eclipsing Binaries Observed By Kepler. Astrophysical Journal, 832(2), Article 121. https://doi.org/10.3847/0004-637X/832/2/121

Given the potential of ensemble asteroseismology for understanding fundamental properties of large numbers of stars, it is critical to determine the accuracy of the scaling relations on which these measurements are based. From several powerful valida... Read More about Testing The Asteroseismic Scaling Relations For Red Giants With Eclipsing Binaries Observed By Kepler.

WASP-South transiting exoplanets: WASP-130b, WASP-131b, WASP-132b, WASP-139b, WASP-140b, WASP-141b and WASP-142b (2016)
Journal Article
Hellier, C., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Jehin, E., …West, R. (2017). WASP-South transiting exoplanets: WASP-130b, WASP-131b, WASP-132b, WASP-139b, WASP-140b, WASP-141b and WASP-142b. Monthly Notices of the Royal Astronomical Society, 465(3), 3693-3707. https://doi.org/10.1093/mnras/stw3005

We describe seven exoplanets transiting stars of brightness V = 10.1–12.4. WASP-130b is a ‘warm Jupiter’ having an orbital period of 11.6 d around a metal-rich G6 star. Its mass and radius (1.23 ± 0.04 MJup and 0.89 ± 0.03 RJup) support the trend tha... Read More about WASP-South transiting exoplanets: WASP-130b, WASP-131b, WASP-132b, WASP-139b, WASP-140b, WASP-141b and WASP-142b.

The First Simultaneous Microlensing Observations by Two Space Telescopes: Spitzer and Swift Reveal a Brown Dwarf in Event OGLE-2015-BLG-1319 (2016)
Journal Article
Shvartzvald, Y., Li, Z., Udalski, A., Gould, A., Sumi, T., Street, R., …Gehrels, N. (2016). The First Simultaneous Microlensing Observations by Two Space Telescopes: Spitzer and Swift Reveal a Brown Dwarf in Event OGLE-2015-BLG-1319. Astrophysical Journal, 831(2), Article 183. https://doi.org/10.3847/0004-637X/831/2/183

Simultaneous observations of microlensing events from multiple locations allow for the breaking of degeneracies between the physical properties of the lensing system, specifically by exploring different regions of the lens plane and by directly measu... Read More about The First Simultaneous Microlensing Observations by Two Space Telescopes: Spitzer and Swift Reveal a Brown Dwarf in Event OGLE-2015-BLG-1319.

Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey (2016)
Journal Article
Henderson, C. B., Poleski, R., Penny, M., Street, R. A., Bennett, D. P., Hogg, D. W., …Wang, D. (2016). Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey. Publications of the Astronomical Society of the Pacific, 128(124401), https://doi.org/10.1088/1538-3873/128/970/124401

K2's Campaign 9 (K2C9) will conduct a ~3.7 deg2 survey toward the Galactic bulge from 2016 April 22 through July 2 that will leverage the spatial separation between K2 and the Earth to facilitate measurement of the microlens parallax ${\pi }_{{\rm{E}... Read More about Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey.

WASP-157b, a Transiting Hot Jupiter Observed with K2 (2016)
Journal Article
Močnik, T., Anderson, D., Brown, D., Collier Cameron, A., Delrez, L., Gillon, M., …West, R. (2016). WASP-157b, a Transiting Hot Jupiter Observed with K2. Publications of the Astronomical Society of the Pacific, 128(970), Article 124403. https://doi.org/10.1088/1538-3873/128/970/124403

We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density, with a mass of 0.57 ± 0.10 MJup and a radius of 1.06 ± 0.05 RJup.... Read More about WASP-157b, a Transiting Hot Jupiter Observed with K2.

A solar twin in the eclipsing binary LL Aquarii (2016)
Journal Article
Graczyk, D., Smolec, R., Pavlovski, K., Southworth, J., Pietrzyński, G., Maxted, P., …Anderson, R. (2016). A solar twin in the eclipsing binary LL Aquarii. Astronomy & Astrophysics, 594, Article A92. https://doi.org/10.1051/0004-6361/201628918

Aims. In the course of a project to study eclipsing binary stars in vinicity of the Sun, we found that the cooler component of LL Aqr is a solar twin candidate. This is the first known star with properties of a solar twin existing in a non-interactin... Read More about A solar twin in the eclipsing binary LL Aquarii.

OGLE-2015-BLG-0479LA,B: Binary Gravitational Microlens Characterized By Simultaneous Ground-based And Space-based Observations (2016)
Journal Article
Han, C., Udalski, A., Gould, A., Zhu, W., Street, R., Yee, J., …DePoy, D. (2016). OGLE-2015-BLG-0479LA,B: Binary Gravitational Microlens Characterized By Simultaneous Ground-based And Space-based Observations. Astrophysical Journal, 828(1), Article 53. https://doi.org/10.3847/0004-637X/828/1/53

We present a combined analysis of the observations of the gravitational microlensing event OGLE-2015-BLG-0479 taken both from the ground and by the Spitzer Space Telescope. The light curves seen from the ground and from space exhibit a time offset of... Read More about OGLE-2015-BLG-0479LA,B: Binary Gravitational Microlens Characterized By Simultaneous Ground-based And Space-based Observations.

WASP-92b, WASP-93b and WASP-118b: three new transiting close-in giant planets (2016)
Journal Article
Hay, K., Collier-Cameron, A., Doyle, A., Hébrard, G., Skillen, I., Anderson, D., …Wilson, P. (2016). WASP-92b, WASP-93b and WASP-118b: three new transiting close-in giant planets. Monthly Notices of the Royal Astronomical Society, 463(3), 3276 - 3289. https://doi.org/10.1093/mnras/stw2090

We present the discovery of three new transiting giant planets, first detected with the WASP telescopes, and establish their planetary nature with follow up spectroscopy and ground-based photometric light curves. WASP-92 is an F7 star, with a moderat... Read More about WASP-92b, WASP-93b and WASP-118b: three new transiting close-in giant planets.

Erratum: Physical properties, star-spot activity, orbital obliquity and transmission spectrum of the Qatar-2 planetary system from multicolour photometry (2016)
Journal Article
Mancini, L., Southworth, J., Ciceri, S., Tregloan-Reed, J., Crossfield, I., Nikolov, N., …Henning, T. (2016). Erratum: Physical properties, star-spot activity, orbital obliquity and transmission spectrum of the Qatar-2 planetary system from multicolour photometry. Monthly Notices of the Royal Astronomical Society, 462(4), 4266 - 4266. https://doi.org/10.1093/mnras/stw1991

Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations (2016)
Journal Article
Figuera Jaimes, R., Bramich, D., Kains, N., Skottfelt, J., Jørgensen, U., Horne, K., …MiNDSTEp Consortium, T. (2016). Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations. Astronomy & Astrophysics, 592, Article A120. https://doi.org/10.1051/0004-6361/201628864

Context. We show the benefits of using electron-multiplying CCDs and the shift-and-add technique as a tool to minimise the effects of atmospheric turbulence, such as blending between stars in crowded fields, and to avoid saturated stars in the fields... Read More about Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations.

Contamination from a nearby star cannot explain the anomalous transmission spectrum of the ultra-short period giant planet WASP-103b (2016)
Journal Article
Southworth, J., & Evans, D. F. (2016). Contamination from a nearby star cannot explain the anomalous transmission spectrum of the ultra-short period giant planet WASP-103b. Monthly Notices of the Royal Astronomical Society, 463(1), 37-44. https://doi.org/10.1093/mnras/stw1943

The planet in the WASP-103 system is an excellent candidate for transmission spectroscopy because of its large radius and high temperature. Application of this technique found a variation of radius with wavelength which was far too strong to be expla... Read More about Contamination from a nearby star cannot explain the anomalous transmission spectrum of the ultra-short period giant planet WASP-103b.

Another one grinds the dust: variability of the planetary debris disc at the white dwarf SDSS J104341.53+085558.2 (2016)
Journal Article
Manser, C. J., Gänsicke, B. T., Koester, D., Marsh, T. R., & Southworth, J. (2016). Another one grinds the dust: variability of the planetary debris disc at the white dwarf SDSS J104341.53+085558.2. Monthly Notices of the Royal Astronomical Society, 462(2), 1461 - 1469. https://doi.org/10.1093/mnras/stw1760

We report 9 yr of optical spectroscopy of the metal-polluted white dwarf SDSS J104341.53+085558.2, which presents morphological variations of the line profiles of the 8600 Å Ca?II triplet emission from the gaseous component of its debris disc. Simila... Read More about Another one grinds the dust: variability of the planetary debris disc at the white dwarf SDSS J104341.53+085558.2.

Mass Measurements Of Isolated Objects From Space-Based Microlensing (2016)
Journal Article
Zhu, W., Calchi Novati, S., Gould, A., Udalski, A., Han, C., Shvartzvald, Y., …GROUP, M. (2016). Mass Measurements Of Isolated Objects From Space-Based Microlensing. Astrophysical Journal, 825(1), Article 60. https://doi.org/10.3847/0004-637X/825/1/60

We report on the mass and distance measurements of two single-lens events from the 2015 Spitzer microlensing campaign. With both finite-source effect and microlens parallax measurements, we find that the lens of OGLE-2015-BLG-1268 is very likely a br... Read More about Mass Measurements Of Isolated Objects From Space-Based Microlensing.

Five transiting hot Jupiters discovered using WASP-South, Euler and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b and WASP-133 b (2016)
Journal Article
Maxted, P., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Hellier, C., …West, R. (2016). Five transiting hot Jupiters discovered using WASP-South, Euler and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b and WASP-133 b. Astronomy and Astrophysics, 591, Article A55. https://doi.org/10.1051/0004-6361/201628250

We have used photometry from the WASP-South instrument to identify 5 stars showing planet-like transits in their light curves. The planetary nature of the companions to these stars has been confirmed using photometry from the EulerCam instrument on t... Read More about Five transiting hot Jupiters discovered using WASP-South, Euler and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b and WASP-133 b.

An optical transmission spectrum of the transiting hot Jupiter in the metal-poor WASP-98 planetary system (2016)
Journal Article
Mancini, L., Giordano, M., Mollière, P., Southworth, J., Brahm, R., Ciceri, S., & Henning, T. (2016). An optical transmission spectrum of the transiting hot Jupiter in the metal-poor WASP-98 planetary system. Monthly Notices of the Royal Astronomical Society, 461(1), 1053 - 1061. https://doi.org/10.1093/mnras/stw1386

The WASP-98 planetary system represents a rare case of a hot Jupiter hosted by a metal-poor main-sequence star. We present a follow-up study of this system based on multiband photometry and high-resolution spectroscopy. Two new transit events of WASP... Read More about An optical transmission spectrum of the transiting hot Jupiter in the metal-poor WASP-98 planetary system.

Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction (2016)
Journal Article
Mancini, L., Lillo-Box, J., Southworth, J., Borsato, L., Gandolfi, D., Ciceri, S., …Th. Henning. (2016). Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction. Astronomy & Astrophysics, 590, Article A112. https://doi.org/10.1051/0004-6361/201526357

We confirm the planetary nature of Kepler-539?b (aka Kepler object of interest K00372.01), a giant transiting exoplanet orbiting a solar-analogue G2?V star. The mass of Kepler-539?b was accurately derived thanks to a series of precise radial velocity... Read More about Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction.

The Spitzer Microlensing Program As A Probe For Globular Cluster Planets: Analysis Of Ogle-2015-BLG-0448 (2016)
Journal Article
Poleski, R., Zhu, W., Christie, G. W., Udalski, A., Gould, A., Bachelet, E., …Wertz, O. (in press). The Spitzer Microlensing Program As A Probe For Globular Cluster Planets: Analysis Of Ogle-2015-BLG-0448. Astrophysical Journal, 823(1), Article 63. https://doi.org/10.3847/0004-637X/823/1/63

The microlensing event OGLE-2015-BLG-0448 was observed by Spitzer and lay within the tidal radius of the globular cluster NGC 6558. The event had moderate magnification and was intensively observed, hence it had the potential to probe the distributio... Read More about The Spitzer Microlensing Program As A Probe For Globular Cluster Planets: Analysis Of Ogle-2015-BLG-0448.

An irradiated brown-dwarf companion to an accreting white dwarf (2016)
Journal Article
Hernández Santisteban, J. V., Knigge, C., Littlefair, S. P., Breton, R. P., Dhillon, V. S., Gänsicke, B. T., …Hauschildt, P. H. (2016). An irradiated brown-dwarf companion to an accreting white dwarf. Nature, 533, 366 -368. https://doi.org/10.1038/nature17952

Interacting compact binary systems provide a natural laboratory in which to study irradiated substellar objects. As the mass-losing secondary (donor) in these systems makes a transition from the stellar to the substellar regime, it is also irradiated... Read More about An irradiated brown-dwarf companion to an accreting white dwarf.

High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere (2016)
Journal Article
Evans, D., Southworth, J., Maxted, P., Skottfelt, J., Hundertmark, M., Jørgensen, U., …Wertz, O. (2016). High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere. Astronomy & Astrophysics, 589, A58. https://doi.org/10.1051/0004-6361/201527970

Context. Wide binaries are a potential pathway for the formation of hot Jupiters. The binary fraction among host stars is an important discriminator between competing formation theories, but has not been well characterised. Additionally, contaminatin... Read More about High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere.

Exploring the crowded central region of ten Galactic globular clusters using EMCCDs Variable star searches and new discoveries (2016)
Journal Article
Figuera Jaimes, R., Bramich, D., Skottfelt, J., Kains, N., Jørgensen, U., Horne, K., …MiNDSTEp Consortium, T. (2016). Exploring the crowded central region of ten Galactic globular clusters using EMCCDs Variable star searches and new discoveries. Astronomy & Astrophysics, 588, Article A128. https://doi.org/10.1051/0004-6361/201527641

Aims. We aim to obtain time-series photometry of the very crowded central regions of Galactic globular clusters; to obtain better angular resolution thanhas been previously achieved with conventional CCDs on ground-based telescopes; and to complete,... Read More about Exploring the crowded central region of ten Galactic globular clusters using EMCCDs Variable star searches and new discoveries.

Kepler Eclipsing Binary Stars. Viii. Identification Of False Positive Eclipsing Binaries And Re-extraction Of New Light Curves (2016)
Journal Article
Abdul-Masih, M., Prša, A., Conroy, K., Bloemen, S., Boyajian, T., Doyle, L. R., …Southworth, J. (2016). Kepler Eclipsing Binary Stars. Viii. Identification Of False Positive Eclipsing Binaries And Re-extraction Of New Light Curves. Astronomical Journal, 151(4), Article 101. https://doi.org/10.3847/0004-6256/151/4/101

The Kepler mission has provided unprecedented, nearly continuous photometric data of ~200,000 objects in the ~105 deg2 field of view (FOV) from the beginning of science operations in May of 2009 until the loss of the second reaction wheel in May of 2... Read More about Kepler Eclipsing Binary Stars. Viii. Identification Of False Positive Eclipsing Binaries And Re-extraction Of New Light Curves.

Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry (vol 555, pg A36, 2013) (2016)
Journal Article
Kains, N., Bramich, D. M., Arellano Ferro, A., Figuera Jaimes, R., Jørgensen, U. G., Giridhar, S., …consortium, T. M. (2016). Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry (vol 555, pg A36, 2013). Astronomy & Astrophysics, 588, Article C2. https://doi.org/10.1051/0004-6361/201321819e

Aims. We present the analysis of 26 nights of V and I time-series observations from 2011 and 2012 of the globular cluster M 30 (NGC 7099). We used our data to search for variable stars in this cluster and refine the periods of known variables; we the... Read More about Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry (vol 555, pg A36, 2013).

Spitzer Observations Of Ogle-2015-blg-1212 Reveal A New Path Toward Breaking Strong Microlens Degeneracies (2016)
Journal Article
Bozza, V., Shvartzvald, Y., Udalski, A., Calchi Novati, S., Bond, I., Han, C., …Kaspi, S. (2016). Spitzer Observations Of Ogle-2015-blg-1212 Reveal A New Path Toward Breaking Strong Microlens Degeneracies. Astrophysical Journal, 820(1), Article 79. https://doi.org/10.3847/0004-637x/820/1/79

Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an in... Read More about Spitzer Observations Of Ogle-2015-blg-1212 Reveal A New Path Toward Breaking Strong Microlens Degeneracies.

An optical transmission spectrum of the giant planet WASP-36 b (2016)
Journal Article
Mancini, L., Kemmer, J., Southworth, J., Bott, K., Mollière, P., Ciceri, S., …Th. Henning. (2016). An optical transmission spectrum of the giant planet WASP-36 b. Monthly Notices of the Royal Astronomical Society, 459(2), 1393 -1402. https://doi.org/10.1093/mnras/stw659

We present broad-band photometry of five transits in the planetary system WASP-36, totalling 17 high-precision light curves. Four of the transits were simultaneously observed in four passbands (g', r', i', z'), using the telescope-defocusing techniqu... Read More about An optical transmission spectrum of the giant planet WASP-36 b.

Spitzer Parallax Of Ogle-2015-blg-0966: A Cold Neptune In The Galactic Disk (2016)
Journal Article
Street, R., Udalski, A., Calchi Novati, S., Hundertmark, M., Zhu, W., Gould, A., …Shin, I. (2016). Spitzer Parallax Of Ogle-2015-blg-0966: A Cold Neptune In The Galactic Disk. Astrophysical Journal, 819(2), Article 93. https://doi.org/10.3847/0004-637x/819/2/93

We report the detection of a cold Neptune mplanet = 21 ± 2 M? orbiting a 0.38 M? M dwarf lying 2.5–3.3 kpc toward the Galactic center as part of a campaign combining ground-based and Spitzer observations to measure the Galactic distribution of planet... Read More about Spitzer Parallax Of Ogle-2015-blg-0966: A Cold Neptune In The Galactic Disk.

Kepler Eclipsing Binary Stars. Vii. The Catalog Of Eclipsing Binaries Found In The Entire Kepler Data Set (2016)
Journal Article
Kirk, B., Conroy, K., Prša, A., Abdul-Masih, M., Kochoska, A., Matijevič, G., …Borucki, W. (2016). Kepler Eclipsing Binary Stars. Vii. The Catalog Of Eclipsing Binaries Found In The Entire Kepler Data Set. Astronomical Journal, 151(3), Article 68. https://doi.org/10.3847/0004-6256/151/3/68

The Kepler mission has provided unprecedented, nearly continuous photometric data of ~200,000 objects in the ~105 deg2 field of view (FOV) from the beginning of science operations in May of 2009 until the loss of the second reaction wheel in May of 2... Read More about Kepler Eclipsing Binary Stars. Vii. The Catalog Of Eclipsing Binaries Found In The Entire Kepler Data Set.

KEPLER ECLIPSING BINARY STARS. VII. THE CATALOG OF ECLIPSING BINARIES FOUND IN THE ENTIRE KEPLER DATA SET (2016)
Journal Article
Kirk, B., Conroy, K., Prsa, A., Abdul-Masih, M., Kochoska, A., Matijevic, G., …Borucki, W. (2016). KEPLER ECLIPSING BINARY STARS. VII. THE CATALOG OF ECLIPSING BINARIES FOUND IN THE ENTIRE KEPLER DATA SET. Astronomical Journal, 151(3), Article ARTN 68. https://doi.org/10.3847/0004-6256/151/3/68

The primary Kepler Mission provided nearly continuous monitoring of ∼200,000 objects with unprecedented photometric precision. We present the final catalog of eclipsing binary systems within the 105 deg2 Kepler field of view. This release incorporate... Read More about KEPLER ECLIPSING BINARY STARS. VII. THE CATALOG OF ECLIPSING BINARIES FOUND IN THE ENTIRE KEPLER DATA SET.

Erratum: A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry (2016)
Journal Article
Arellano Ferro, A., Bramich, D., Figuera Jaimes, R., Giridhar, S., Kains, N., Kuppuswamy, K., …consortium, T. M. (2016). Erratum: A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry. Monthly Notices of the Royal Astronomical Society, 458(2), 1188 - 1189. https://doi.org/10.1093/mnras/stw311

No abstract

New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b (2016)
Journal Article
Maciejewski, G., Dimitrov, D., Mancini, L., Southworth, J., Ciceri, S., D'Ago, G., …Henning, T. (2016). New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b. Acta Astronomica, 66(1), 55 - 74

We present new transit light curves for planets in six extrasolar planetary systems. They were acquired with 0.4-2.2 m telescopes located in west Asia, Europe, and South America. When combined with literature data, they allowed us to redetermine syst... Read More about New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b.

High-precision photometry by telescope defocussing - VIII. WASP-22, WASP-41, WASP-42 and WASP-55 (2016)
Journal Article
Southworth, J., Tregloan-Reed, J., Andersen, M., Calchi Novati, S., Ciceri, S., Colque, J., …Wang, Y. (2016). High-precision photometry by telescope defocussing - VIII. WASP-22, WASP-41, WASP-42 and WASP-55. Monthly Notices of the Royal Astronomical Society, 457(4), 4205 - 4217. https://doi.org/10.1093/mnras/stw279

We present 13 high-precision and four additional light curves of four bright southern-hemisphere transiting planetary systems: WASP-22, WASP-41, WASP-42 and WASP-55. In the cases of WASP-42 and WASP-55, these are the first follow-up observations sinc... Read More about High-precision photometry by telescope defocussing - VIII. WASP-22, WASP-41, WASP-42 and WASP-55.

Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b (2016)
Journal Article
West, R., Almenara, J., Anderson, D., Bouchy, F., Brown, D., Collier Cameron, A., …Udry, S. (2016). Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b. Astronomy & Astrophysics, 585, Article A126. https://doi.org/10.1051/0004-6361/201527276

We report on three new transiting hot Jupiter planets, discovered from the WASP surveys, which we combine with radial velocities from OHP/SOPHIE and Euler/CORALIE and photometry from Euler and TRAPPIST. The planets WASP-76b, WASP-82b, and WASP-90b ar... Read More about Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b.

Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry (2015)
Journal Article
Ciceri, S., Mancini, L., Southworth, J., Lendl, M., Tregloan-Reed, J., Brahm, R., …Wertz, O. (2016). Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry. Monthly Notices of the Royal Astronomical Society, 456(1), 990 -1002. https://doi.org/10.1093/mnras/stv2698

Accurate measurements of the physical characteristics of a large number of exoplanets are useful to strongly constrain theoretical models of planet formation and evolution, which lead to the large variety of exoplanets and planetary-system configurat... Read More about Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry.

Doppler imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9 (2015)
Journal Article
Manser, C. J., Gänsicke, B. T., Marsh, T. R., Veras, D., Koester, D., Breedt, E., …Southworth, J. (2016). Doppler imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9. Monthly Notices of the Royal Astronomical Society, 455(4), 4467 -4478. https://doi.org/10.1093/mnras/stv2603

Debris discs which orbit white dwarfs are signatures of remnant planetary systems. We present 12 yr of optical spectroscopy of the metal-polluted white dwarf SDSS J1228+1040, which shows a steady variation in the morphology of the 8600?Å Ca?II triple... Read More about Doppler imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9.

Rotation periods and astrometric motions of the Luhman 16AB brown dwarfs by high-resolution lucky-imaging monitoring (2015)
Journal Article
Mancini, L., Giacobbe, P., Littlefair, S., Southworth, J., Bozza, V., Damasso, M., …Wertz, O. (2015). Rotation periods and astrometric motions of the Luhman 16AB brown dwarfs by high-resolution lucky-imaging monitoring. Astronomy & Astrophysics, 584, Article A104. https://doi.org/10.1051/0004-6361/201526899

Context. Photometric monitoring of the variability of brown dwarfs can provide useful information about the structure of clouds in their cold atmospheres.The brown-dwarf binary system Luhman?16AB is an interesting target for such a study, because its... Read More about Rotation periods and astrometric motions of the Luhman 16AB brown dwarfs by high-resolution lucky-imaging monitoring.

Larger and faster: revised properties and a shorter orbital period for the WASP-57 planetary system from a pro-am collaboration (2015)
Journal Article
Southworth, J., Mancini, L., Tregloan-Reed, J., Calchi Novati, S., Ciceri, S., D'Ago, G., …Wertz, O. (2015). Larger and faster: revised properties and a shorter orbital period for the WASP-57 planetary system from a pro-am collaboration. Monthly Notices of the Royal Astronomical Society, 454(3), 3094 -3107. https://doi.org/10.1093/mnras/stv2183

Transits in the WASP-57 planetary system have been found to occur half an hour earlier than expected. We present 10 transit light curves from amateur telescopes, on which this discovery was based, 13 transit light curves from professional facilities... Read More about Larger and faster: revised properties and a shorter orbital period for the WASP-57 planetary system from a pro-am collaboration.

Red Noise Versus Planetary Interpretations In The Microlensing Event OGLE-2013-BLG-446 (2015)
Journal Article
Bachelet, E., Bramich, D., Han, C., Greenhill, J., Street, R., Gould, A., …Wertz, O. (2015). Red Noise Versus Planetary Interpretations In The Microlensing Event OGLE-2013-BLG-446. Astrophysical Journal, 812(2), Article 136. https://doi.org/10.1088/0004-637X/812/2/136

For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensi... Read More about Red Noise Versus Planetary Interpretations In The Microlensing Event OGLE-2013-BLG-446.

HD183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component (2015)
Conference Proceeding
Derekas, A., Borkovits, T., Fuller, J., Szabó, G., Pavlovski, K., Csák, B., …Jankovics, I. (2015). HD183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component. In EPJ Web of Conferences. https://doi.org/10.1051/epjconf/201510106021

IC 8560861 (HD 183648) is a marginally eccentric (e = 0.05) eclipsing binary with an orbital period of Porb = 31.973 d, exhibiting mmag amplitude pulsations on time scales of a few days. We present the results of the complex analysis of high and medi... Read More about HD183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component.

Lamost Observations In The Kepler Field. I. Database Of Low-resolution Spectra (2015)
Journal Article
De Cat, P., Fu, J., Ren, A., Yang, X., Shi, J., Luo, A., …Zhou, X. (2015). Lamost Observations In The Kepler Field. I. Database Of Low-resolution Spectra. Astrophysical Journal Supplement, 220(1), Article 19. https://doi.org/10.1088/0067-0049/220/1/19

The nearly continuous light curves with micromagnitude precision provided by the space mission Kepler are revolutionizing our view of pulsating stars. They have revealed a vast sea of low-amplitude pulsation modes that were undetectable from Earth. T... Read More about Lamost Observations In The Kepler Field. I. Database Of Low-resolution Spectra.

Multiple star systems observed with CoRoT and Kepler (invited review) (2015)
Conference Proceeding
Southworth, J. (2015). Multiple star systems observed with CoRoT and Kepler (invited review). . https://doi.org/10.1051/epjconf/201510104001

The CoRoT and Kepler satellites were the first space platforms designed to perform high-precision photometry for a large number of stars. Multiple systems display a wide variety of photometric variability, making them natural benefactors of these mis... Read More about Multiple star systems observed with CoRoT and Kepler (invited review).

The GAPS programme with HARPS-N at TNG IX. The multi-planet system KELT-6: Detection of the planet KELT-6 c and measurement of the Rossiter-McLaughlin effect for KELT-6 b (2015)
Journal Article
Damasso, M., Esposito, M., Nascimbeni, V., Desidera, S., Bonomo, A., Bieryla, A., …Zanmar Sanchez, R. (2015). The GAPS programme with HARPS-N at TNG IX. The multi-planet system KELT-6: Detection of the planet KELT-6 c and measurement of the Rossiter-McLaughlin effect for KELT-6 b. Astronomy & Astrophysics, 581, Article L6. https://doi.org/10.1051/0004-6361/201526995

Aims. For more than 1.5 years we spectroscopically monitored the star KELT-6 (BD+31?2447), which is known to host the transiting hot-Saturn KELT-6?b, because a previously observed long-term trend in radial velocity time series suggested that there is... Read More about The GAPS programme with HARPS-N at TNG IX. The multi-planet system KELT-6: Detection of the planet KELT-6 c and measurement of the Rossiter-McLaughlin effect for KELT-6 b.

KIC 9533489: a genuine gamma Doradus - delta Scuti Kepler hybrid pulsator with transit events (2015)
Journal Article
Bognár, Z., Lampens, P., Frémat, Y., Taylor, J., Sódor, Á., De Cat, P., …Martín-Fernández, P. (2015). KIC 9533489: a genuine gamma Doradus - delta Scuti Kepler hybrid pulsator with transit events. Astronomy & Astrophysics, 581, Article A77. https://doi.org/10.1051/0004-6361/201526154

Context. Several hundred candidate hybrid pulsators of type A–F have been identified from space-based observations. Their large number allows both statistical analyses and detailed investigations of individual stars. This offers the opportunity to st... Read More about KIC 9533489: a genuine gamma Doradus - delta Scuti Kepler hybrid pulsator with transit events.

Double riches: asteroseismology in eclipsing binaries (2015)
Journal Article
Southworth, J. (2015). Double riches: asteroseismology in eclipsing binaries. Proceedings of the International Astronomical Union, 11, 628 - 635. https://doi.org/10.1017/S1743921316006220

The study of eclipsing binaries is our primary source of measured properties of normal stars, achieved through analysis of light and radial velocity curves of eclipsing systems. The study of oscillations and pulsations is increasingly vital for deter... Read More about Double riches: asteroseismology in eclipsing binaries.

A New sdo plus DM Binary With Extreme Eclipses And Reflection Effect (2015)
Journal Article
Derekas, A., Németh, P., Southworth, J., Borkovits, T., Sárneczky, K., Pál, A., …Kriskovics, L. (2015). A New sdo plus DM Binary With Extreme Eclipses And Reflection Effect. Astrophysical Journal, 808(2), Article 179. https://doi.org/10.1088/0004-637X/808/2/179

We report the discovery of a new totally eclipsing binary (R.A. = ${06}^{{\rm{h}}}{40}^{{\rm{m}}}{29}^{{\rm{s}}}11$; decl. = +38°56'52''2; J = 2000.0; Rmax = 17.2 mag) with an sdO primary and a strongly irradiated red dwarf companion. It has an orbit... Read More about A New sdo plus DM Binary With Extreme Eclipses And Reflection Effect.

The GAPS Programme with HARPS-N at TNG VIII. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting planetary systems HAT-P-36 and WASP-11/HAT-P-10 (2015)
Journal Article
Mancini, L., Esposito, M., Covino, E., Raia, G., Southworth, J., Tregloan-Reed, J., …Zanmar Sanchez, R. (2015). The GAPS Programme with HARPS-N at TNG VIII. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting planetary systems HAT-P-36 and WASP-11/HAT-P-10. Astronomy & Astrophysics, 579, Article A136. https://doi.org/10.1051/0004-6361/201526030

Context. Orbital obliquity is thought to be a fundamental parameter in tracing the physical mechanisms that cause the migration of giant planets from the snow line down to roughly 10-2?au from their host stars. We are carrying out a large programme t... Read More about The GAPS Programme with HARPS-N at TNG VIII. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting planetary systems HAT-P-36 and WASP-11/HAT-P-10.

Spectroscopically resolving the Algol triple system (2015)
Journal Article
Kolbas, V., Pavlovski, K., Southworth, J., Lee, C., Lee, D., Lee, J., …Tkachenko, A. (2015). Spectroscopically resolving the Algol triple system. Monthly Notices of the Royal Astronomical Society, 451(4), 4150 -4161. https://doi.org/10.1093/mnras/stv1261

Algol (ß Persei) is the prototypical semidetached eclipsing binary and a hierarchical triple system. From 2006 to 2010 we obtained 121 high-resolution and high signal-to-noise ratio echelle spectra of this object. Spectral disentangling yields the in... Read More about Spectroscopically resolving the Algol triple system.

Variable Emission from a Gaseous Disc around a Metal-Polluted White Dwarf (2015)
Conference Proceeding
Wilson, D. J., Gaensicke, B. T., Koester, D., Raddi, R., Breedt, E., Southworth, J., & Parsons, S. G. (2015). Variable Emission from a Gaseous Disc around a Metal-Polluted White Dwarf. In Vol. 493 – 19th European Workshop on White Dwarfs

We present the discovery of a variable gaseous disc around the metal-polluted DA white dwarf SDSS J1617+1620. Time-series spectroscopy obtained during the period 2006-2014 has shown the appearance of very strong double-peaked Ca ii 8600Å emission lin... Read More about Variable Emission from a Gaseous Disc around a Metal-Polluted White Dwarf.

A census of variability in globular cluster M 68 (NGC 4590) (2015)
Journal Article
Kains, N., Arellano Ferro, A., Figuera Jaimes, R., Bramich, D., Skottfelt, J., Jørgensen, U., …MiNDSTEp Consortium, T. (2015). A census of variability in globular cluster M 68 (NGC 4590). Astronomy & Astrophysics, 578, Article A128. https://doi.org/10.1051/0004-6361/201424600

Aims. We analyse 20 nights of CCD observations in the V and I bands of the globular cluster M?68 (NGC 4590) and use them to detect variable objects. We also obtained electron-multiplying CCD (EMCCD) observations for this cluster in order to explore i... Read More about A census of variability in globular cluster M 68 (NGC 4590).

The GAPS programme with HARPS-N at TNG VII. Putting exoplanets in the stellar context: magnetic activity and asteroseismology of tau Bootis A (2015)
Journal Article
Borsa, F., Scandariato, G., Rainer, M., Bignamini, A., Maggio, A., Poretti, E., …Stelzer, B. (2015). The GAPS programme with HARPS-N at TNG VII. Putting exoplanets in the stellar context: magnetic activity and asteroseismology of tau Bootis A. Astronomy & Astrophysics, 578, Article A64. https://doi.org/10.1051/0004-6361/201525741

Aims. We observed the t Boo system with the HARPS-N spectrograph to test a new observational strategy aimed at jointly studying asteroseismology, the planetary orbit, and star-planet magnetic interaction.

Methods. We collected high-cadence observa... Read More about The GAPS programme with HARPS-N at TNG VII. Putting exoplanets in the stellar context: magnetic activity and asteroseismology of tau Bootis A.

Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau (2015)
Journal Article
Maxted, P., Hutcheon, R., Torres, G., Lacy, C., Southworth, J., Smalley, B., …Clausen, J. (2015). Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau. Astronomy & Astrophysics, 578, Article A25. https://doi.org/10.1051/0004-6361/201525873

V1094 Tau is bright eclipsing binary star with an orbital period close to 9 days containing two stars similar to the Sun. Our aim is to test models of Sun-like stars using precise and accurate mass and radius measurements for both stars in V1094 Tau.... Read More about Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau.

Stellar parameters of early-M dwarfs from ratios of spectral features at optical wavelengths (2015)
Journal Article
Maldonado, J., Affer, L., Micela, G., Scandariato, G., Damasso, M., Stelzer, B., …Suárez Mascareño, A. (2015). Stellar parameters of early-M dwarfs from ratios of spectral features at optical wavelengths. Astronomy & Astrophysics, 577, Article A132. https://doi.org/10.1051/0004-6361/201525797

Context. Low-mass stars have been recognised as promising targets in the search for rocky, small planets with the potential of supporting life. As a consequence, Doppler search programmes using high-resolution spectrographs like HARPS or HARPS-N are... Read More about Stellar parameters of early-M dwarfs from ratios of spectral features at optical wavelengths.

A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars (2015)
Journal Article
Maxted, P., Serenelli, A., & Southworth, J. (2015). A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars. Astronomy & Astrophysics, 577, Article A90. https://doi.org/10.1051/0004-6361/201525774

Previous studies suggest that tidal interactions may be responsible for discrepancies between the ages of exoplanet host stars estimated using stellar models (isochronal ages) and age estimates based on the stars' rotation periods (gyrochronological... Read More about A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars.

Physical properties of the HAT-P-23 and WASP-48 planetary systems from multi-colour photometry (2015)
Journal Article
Ciceri, S., Mancini, L., Southworth, J., Bruni, I., Nikolov, N., D’Ago, G., …Th. Henning. (2015). Physical properties of the HAT-P-23 and WASP-48 planetary systems from multi-colour photometry. Astronomy & Astrophysics, 577, Article A54. https://doi.org/10.1051/0004-6361/201425449

Context. Accurate and repeated photometric follow-up observations of planetary transit events are important to precisely characterize the physical properties of exoplanets. A good knowledge of the main characteristics of the exoplanets is fundamental... Read More about Physical properties of the HAT-P-23 and WASP-48 planetary systems from multi-colour photometry.

Transits and starspots in the WASP-6 planetary system (2015)
Journal Article
Tregloan-Reed, J., Southworth, J., Burgdorf, M., Calchi Novati, S., Dominik, M., Finet, F., …Surdej, J. (2015). Transits and starspots in the WASP-6 planetary system. Monthly Notices of the Royal Astronomical Society, 450(2), 1760 -1769. https://doi.org/10.1093/mnras/stv730

We present updates to PRISM, a photometric transit-starspot model, and GEMC, a hybrid optimization code combining MCMC and a genetic algorithm. We then present high-precision photometry of four transits in the WASP-6 planetary system, two of which co... Read More about Transits and starspots in the WASP-6 planetary system.

OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF (2015)
Journal Article
Skowron, J., Shin, I., Udalski, A., Han, C., Sumi, T., Shvartzvald, Y., …Wertz, O. (2015). OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF. Astrophysical Journal, 804(1), Article 33. https://doi.org/10.1088/0004-637X/804/1/33

We report the discovery of a Jupiter-mass planet orbiting an M-dwarf star that gave rise to the microlensing event OGLE-2011-BLG-0265. Such a system is very rare among known planetary systems and thus the discovery is important for theoretical studie... Read More about OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF.

PATHWAY TO THE GALACTIC DISTRIBUTION OF PLANETS: COMBINED SPITZER AND GROUND-BASED MICROLENS PARALLAX MEASUREMENTS OF 21 SINGLE-LENS EVENTS (2015)
Journal Article
Calchi Novati, S., Gould, A., Udalski, A., Menzies, J., Bond, I., Shvartzvald, Y., …DePoy, D. (2015). PATHWAY TO THE GALACTIC DISTRIBUTION OF PLANETS: COMBINED SPITZER AND GROUND-BASED MICROLENS PARALLAX MEASUREMENTS OF 21 SINGLE-LENS EVENTS. Astrophysical Journal, 804(1), Article 20. https://doi.org/10.1088/0004-637X/804/1/20

We present microlens parallax measurements for 21 (apparently) isolated lenses observed toward the Galactic bulge that were imaged simultaneously from Earth and Spitzer, which was ~1 AU west of Earth in projection. We combine these measurements with... Read More about PATHWAY TO THE GALACTIC DISTRIBUTION OF PLANETS: COMBINED SPITZER AND GROUND-BASED MICROLENS PARALLAX MEASUREMENTS OF 21 SINGLE-LENS EVENTS.

SPECTROSCOPIC ORBITAL PERIODS FOR 29 CATACLYSMIC VARIABLES FROM THE SLOAN DIGITAL SKY SURVEY (2015)
Journal Article
Thorstensen, J. R., Taylor, C. J., Peters, C. S., Skinner, J. N., Southworth, J., & Gänsicke, B. T. (2015). SPECTROSCOPIC ORBITAL PERIODS FOR 29 CATACLYSMIC VARIABLES FROM THE SLOAN DIGITAL SKY SURVEY. Astronomical Journal, 149(4), 128. https://doi.org/10.1088/0004-6256/149/4/128

We report follow-up spectroscopy of 29 cataclysmic variables from the Sloan Digital Sky Survey (SDSS), 22 of which were discovered by SDSS and seven of which are previously known systems that were recovered in SDSS. The periods for 16 of these object... Read More about SPECTROSCOPIC ORBITAL PERIODS FOR 29 CATACLYSMIC VARIABLES FROM THE SLOAN DIGITAL SKY SURVEY.

The GAPS programme with HARPS-N at TNG V. A comprehensive analysis of the XO-2 stellar and planetary systems (2015)
Journal Article
Damasso, M., Biazzo, K., Bonomo, A., Desidera, S., Lanza, A., Nascimbeni, V., …Southworth, J. (2015). The GAPS programme with HARPS-N at TNG V. A comprehensive analysis of the XO-2 stellar and planetary systems. Astronomy & Astrophysics, 575, Article A111. https://doi.org/10.1051/0004-6361/201425332

Aims. XO-2 is the first confirmed wide stellar binary system where the almost twin components XO-2N and XO-2S have planets, and it is a peculiar laboratory in which to investigate the diversity of planetary systems. This stimulated a detailed charact... Read More about The GAPS programme with HARPS-N at TNG V. A comprehensive analysis of the XO-2 stellar and planetary systems.

The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b (2015)
Journal Article
Sozzetti, A., Bonomo, A., Biazzo, K., Mancini, L., Damasso, M., Desidera, S., …Southworth, J. (2015). The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b. Astronomy & Astrophysics, 575, Article L15. https://doi.org/10.1051/0004-6361/201425570

We update the TrES-4 system parameters using high-precision HARPS-N radial-velocity measurements and new photometric light curves. A combined spectroscopic and photometric analysis allows us to determine a spectroscopic orbit with a semi-amplitude K... Read More about The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b.

High-precision multiband time series photometry of exoplanets Qatar-1b and TrES-5b (2015)
Journal Article
Mislis, D., Mancini, L., Tregloan-Reed, J., Ciceri, S., Taylor, J., D'Ago, G., …Schroeder, T. (2015). High-precision multiband time series photometry of exoplanets Qatar-1b and TrES-5b. Monthly Notices of the Royal Astronomical Society, 448(3), 2617 -2623. https://doi.org/10.1093/mnras/stv197

We present an analysis of the Qatar-1 and TrES-5 transiting exoplanetary systems, which contain Jupiter-like planets on short-period orbits around K-dwarf stars. Our data comprise a total of 20 transit light curves obtained using five medium-class te... Read More about High-precision multiband time series photometry of exoplanets Qatar-1b and TrES-5b.

Bayesian mass and age estimates for transiting exoplanet host stars (2015)
Journal Article
Maxted, P., Serenelli, A., & Southworth, J. (2015). Bayesian mass and age estimates for transiting exoplanet host stars. Astronomy & Astrophysics, 575, Article A36. https://doi.org/10.1051/0004-6361/201425331

The mean density of a star transited by a planet, brown dwarf or low mass star can be accurately measured from its light curve. This measurement can be combined with other observations to estimate its mass and age by comparison with stellar models. O... Read More about Bayesian mass and age estimates for transiting exoplanet host stars.

The two-colour EMCCD instrument for the Danish 1.54 m telescope and SONG (2015)
Journal Article
Skottfelt, J., Bramich, D., Hundertmark, M., Jørgensen, U., Michaelsen, N., Kjærgaard, P., …Pallé, P. (2015). The two-colour EMCCD instrument for the Danish 1.54 m telescope and SONG. Astronomy & Astrophysics, 574, Article A54. https://doi.org/10.1051/0004-6361/201425260

We report on the implemented design of a two-colour instrument based on electron-multiplying CCD (EMCCD) detectors. This instrument is currently installed at the Danish 1.54 m telescope at ESO’s La Silla Observatory in Chile, and will be available at... Read More about The two-colour EMCCD instrument for the Danish 1.54 m telescope and SONG.

Searching for variable stars in the cores of five metal-rich globular clusters using EMCCD observations (2015)
Journal Article
Skottfelt, J., Bramich, D., Figuera Jaimes, R., Jørgensen, U., Kains, N., Arellano Ferro, A., …MiNDSTEp Consortium, T. (2015). Searching for variable stars in the cores of five metal-rich globular clusters using EMCCD observations. Astronomy and Astrophysics Supplement Series, 573, Article A103. https://doi.org/10.1051/0004-6361/201424967

Abstract

Aims. In this paper, we present the analysis of time-series observations from 2013 and 2014 of five metal-rich ([Fe/H] > -1) globular clusters: NGC 6388, NGC 6441, NGC 6528, NGC 6638, and NGC 6652. The data have been used to perform a cen... Read More about Searching for variable stars in the cores of five metal-rich globular clusters using EMCCD observations.

Absolute Properties Of The Eclipsing Binary Star Im Persei (2015)
Journal Article
Sandberg Lacy, C. H., Torres, G., Fekel, F. C., Muterspaugh, M. W., & Southworth, J. (2015). Absolute Properties Of The Eclipsing Binary Star Im Persei. Astronomical Journal, 149(1), Article 34. https://doi.org/10.1088/0004-6256/149/1/34

IM Per is a detached A7 eccentric eclipsing binary star. We have obtained extensive measurements of the light curve (28,225 differential magnitude observations) and radial velocity curve (81 spectroscopic observations) which allow us to fit orbits an... Read More about Absolute Properties Of The Eclipsing Binary Star Im Persei.

DEBCat: A Catalog of Detached Eclipsing Binary Stars (2015)
Conference Proceeding
Southworth, J. (2015). DEBCat: A Catalog of Detached Eclipsing Binary Stars. In Astronomical Society of the Pacific Conference Series

Detached eclipsing binary star systems are our primary source of measured physical properties of normal stars. I introduce DEBCat: a catalogue of detached eclipsing binaries with mass and radius measurements to the 2% precision necessary to put usefu... Read More about DEBCat: A Catalog of Detached Eclipsing Binary Stars.

Kepler-432 b: a massive planet in a highly eccentric orbit transiting a red giant (2014)
Journal Article
Ciceri, S., Lillo-Box, J., Southworth, J., Mancini, L., Th. Henning, & Barrado, D. (2015). Kepler-432 b: a massive planet in a highly eccentric orbit transiting a red giant. Astronomy & Astrophysics, 573, Article L5. https://doi.org/10.1051/0004-6361/201425145

We report the first disclosure of the planetary nature of Kepler-432?b (aka Kepler object of interest KOI-1299.01). We accurately constrained its mass and eccentricity by high-precision radial velocity measurements obtained with the CAFE spectrograph... Read More about Kepler-432 b: a massive planet in a highly eccentric orbit transiting a red giant.

Orbital periods of cataclysmic variables identified by the SDSS IX. NTT photometry of eight eclipsing and three magnetic systems (2014)
Journal Article
Southworth, J., Tappert, C., Gänsicke, B., & Copperwheat, C. (2015). Orbital periods of cataclysmic variables identified by the SDSS IX. NTT photometry of eight eclipsing and three magnetic systems. Astronomy & Astrophysics, 573, Article A61. https://doi.org/10.1051/0004-6361/201425060

We report the discovery of eclipses and the first orbital period measurements for four cataclysmic variables, plus the first orbital period measurements for one known eclipsing and two magnetic systems. SDSS J093537.46+161950.8 exhibits 1 mag deep ec... Read More about Orbital periods of cataclysmic variables identified by the SDSS IX. NTT photometry of eight eclipsing and three magnetic systems.

High-precision photometry by telescope defocusing - VII. The ultrashort period planet WASP-103 (2014)
Journal Article
Southworth, J., Mancini, L., Ciceri, S., Budaj, J., Dominik, M., Figuera Jaimes, R., …Surdej, J. (2015). High-precision photometry by telescope defocusing - VII. The ultrashort period planet WASP-103. Monthly Notices of the Royal Astronomical Society, 447(1), 711 -721. https://doi.org/10.1093/mnras/stu2394

We present 17 transit light curves of the ultrashort period planetary system WASP-103, a strong candidate for the detection of tidally-induced orbital decay. We use these to establish a high-precision reference epoch for transit timing studies. The t... Read More about High-precision photometry by telescope defocusing - VII. The ultrashort period planet WASP-103.

WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system (2014)
Journal Article
Neveu-VanMalle, M., Queloz, D., Anderson, D., Charbonnel, C., Collier Cameron, A., Delrez, L., …West, R. (2014). WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424744

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. WASP-94A (2MASS 20550794–3408079) is an F8 type star hosting a transiting planet with a radius of 1.72 ± 0.06 RJup, a mass of 0.452 ± 0.034 MJ... Read More about WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system.

KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes(Corrigendum) (2014)
Journal Article
Pápics, P. I., Moravveji, E., Aerts, C., Tkachenko, A., Triana, S. A., Bloemen, S., & Southworth, J. (2014). KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes(Corrigendum). Astronomy & Astrophysics, 570, Article C4. https://doi.org/10.1051/0004-6361/201424094e

An error occurred during the production process. An incorrect Fig. 12 was published. The correct Fig. 12 is published on the following page.

Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b (2014)
Journal Article
Hellier, C., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Jehin, E., …West, R. (2014). Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b. Astronomical Journal, 150(1), Article 18. https://doi.org/10.1088/0004-6256/150/1/18

We report the discovery of three new transiting hot Jupiters by WASP-South together with the TRAPPIST photometer and the Euler/CORALIE spectrograph. WASP-74b orbits a star of V = 9.7, making it one of the brighter systems accessible to Southern teles... Read More about Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b.

Variable emission from a gaseous disc around a metal-polluted white dwarf (2014)
Journal Article
Wilson, D., Gänsicke, B., Koester, D., Raddi, R., Breedt, E., Southworth, J., & Parsons, S. (2014). Variable emission from a gaseous disc around a metal-polluted white dwarf. Monthly Notices of the Royal Astronomical Society, 445(2), 1878 -1884. https://doi.org/10.1093/mnras/stu1876

We present the discovery of strongly variable emission lines from a gaseous disc around the DA white dwarf SDSS J1617+1620, a star previously found to have an infrared excess indicative of a dusty debris disc formed by the tidal disruption of a rocky... Read More about Variable emission from a gaseous disc around a metal-polluted white dwarf.

Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b (2014)
Journal Article
Anderson, D., Brown, D., Collier Cameron, A., Delrez, L., Fumel, A., Gillon, M., …West, R. (2014). Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b. arXiv,

We present the discoveries of six transiting hot Jupiters: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b and WASP-112b. The planets have masses of 0.51--2.2 MJup and radii of 1.19--1.44 RJup and are in orbits of 1.68--3.78 d around stars with... Read More about Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b.

Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary (2014)
Journal Article
Anderson, D., Collier Cameron, A., Delrez, L., Doyle, A., Faedi, F., Fumel, A., …West, R. (2014). Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary. Monthly Notices of the Royal Astronomical Society, 445(2), 1114 -1129. https://doi.org/10.1093/mnras/stu1737

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ~ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3.868-d period around an active, ~1-Gyr, mid-K dw... Read More about Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary.

KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes (2014)
Journal Article
Pápics, P., Moravveji, E., Aerts, C., Tkachenko, A., Triana, S., Bloemen, S., & Southworth, J. (2014). KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes. Astronomy & Astrophysics, 570, Article A8. https://doi.org/10.1051/0004-6361/201424094

Context. Massive stars are important for the chemical enrichment of the universe. Since internal mixing processes influence their lives, it is very important to place constraints on the corresponding physical parameters, such as core overshooting and... Read More about KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes.

Tracing CNO exposed layers in the Algol-type binary system u Her (2014)
Journal Article
Kolbas, V., Dervişoğlu, A., Pavlovski, K., & Southworth, J. (2014). Tracing CNO exposed layers in the Algol-type binary system u Her. Monthly Notices of the Royal Astronomical Society, 444(4), 3118 -3129. https://doi.org/10.1093/mnras/stu1652

The chemical composition of stellar photospheres in mass-transferring binary systems is a precious diagnostic of the nucleosynthesis processes that occur deep within stars, and preserves information on the components’ history. The binary system u Her... Read More about Tracing CNO exposed layers in the Algol-type binary system u Her.

Observational Studies of Transiting Extrasolar Planets (2014)
Conference Proceeding
Southworth, J. (2014). Observational Studies of Transiting Extrasolar Planets. In Living Together: planets, host stars and binaries (321 -336)

The study of transiting extrasolar planets is only 15 years old, but has matured into a rich area of research. I review the observational aspects of this work, concentrating on the discovery of transits, the characterization of planets from photometr... Read More about Observational Studies of Transiting Extrasolar Planets.

Physical properties of the WASP-67 planetary system from multi-colour photometry (2014)
Journal Article
Mancini, L., Southworth, J., Ciceri, S., Calchi Novati, S., Dominik, M., Henning, T., …Wertz, O. (2014). Physical properties of the WASP-67 planetary system from multi-colour photometry. Astronomy & Astrophysics, 568, Article A127. https://doi.org/10.1051/0004-6361/201424106

Context. The extrasolar planet WASP-67 b is the first hot Jupiter definitively known to undergo only partial eclipses. The lack of the second and third contact points in this planetary system makes it difficult to obtain accurate measurements of its... Read More about Physical properties of the WASP-67 planetary system from multi-colour photometry.

High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26 (2014)
Journal Article
Southworth, J., Hinse, T., Burgdorf, M., Calchi Novati, S., Dominik, M., Galianni, P., …Vilela, C. (2014). High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26. Monthly Notices of the Royal Astronomical Society, 444(1), 776 -789. https://doi.org/10.1093/mnras/stu1492

We present time series photometric observations of 13 transits in the planetary systems WASP-24, WASP-25 and WASP-26. All three systems have orbital obliquity measurements, WASP-24 and WASP-26 have been observed with Spitzer, and WASP-25 was previous... Read More about High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26.

HD 183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component (2014)
Journal Article
Borkovits, T., Derekas, A., Fuller, J., Szabó, G., Pavlovski, K., Csák, B., …Jankovics, I. (2014). HD 183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component. Monthly Notices of the Royal Astronomical Society, 443(4), 3068 - 3081. https://doi.org/10.1093/mnras/stu1379

KIC 8560861 (HD 183648) is a marginally eccentric (e = 0.05) eclipsing binary with an orbital period of Porb = 31.973 d, exhibiting mmag amplitude pulsations on time-scales of a few days. We present the results of the complex analysis of high- and me... Read More about HD 183648: a Kepler eclipsing binary with anomalous ellipsoidal variations and a pulsating component.

KIC 7582608: a new Kepler roAp star with frequency variability (2014)
Journal Article
Holdsworth, D. L., Smalley, B., Kurtz, D. W., Southworth, J., Cunha, M. S., & Clubb, K. I. (2014). KIC 7582608: a new Kepler roAp star with frequency variability. Monthly Notices of the Royal Astronomical Society, 443(3), 2049 - 2062. https://doi.org/10.1093/mnras/stu1303

We analyse the fifth rapidly oscillating Ap (roAp) star reported in the Kepler field, KIC 7582608, discovered with the SuperWASP (Wide Angle Search for Planets) project. The object shows a high-frequency pulsation at 181.7324 d-1 (P = 7.9 min) with a... Read More about KIC 7582608: a new Kepler roAp star with frequency variability.

Warm ice giant GJ 3470b - II. Revised planetary and stellar parameters from optical to near-infrared transit photometry (2014)
Journal Article
Biddle, L. I., Pearson, K. A., Crossfield, I. J. M., Fulton, B. J., Ciceri, S., Eastman, J., …Webber, M. W. (2014). Warm ice giant GJ 3470b - II. Revised planetary and stellar parameters from optical to near-infrared transit photometry. Monthly Notices of the Royal Astronomical Society, 443(2), 1810-1820. https://doi.org/10.1093/mnras/stu1199

It is important to explore the diversity of characteristics of low-mass, low-density planets to understand the nature and evolution of this class of planets. We present a homogeneous analysis of 12 new and 9 previously published broad-band photometri... Read More about Warm ice giant GJ 3470b - II. Revised planetary and stellar parameters from optical to near-infrared transit photometry.

The GAPS programme with HARPS-N at TNG: IV. A planetary system around XO-2S⋆⋆⋆ (2014)
Journal Article
Desidera, S., Bonomo, A. S., Claudi, R. U., Damasso, M., Biazzo, K., Sozzetti, A., …Zanmar Sanchez, R. (2014). The GAPS programme with HARPS-N at TNG: IV. A planetary system around XO-2S⋆⋆⋆. Astronomy & Astrophysics, 567, Article L6. https://doi.org/10.1051/0004-6361/201424339

We performed an intensive radial velocity monitoring of XO-2S, the wide companion of the transiting planet-host XO-2N, using HARPS-N at TNG in the framework of the GAPS programme. The radial velocity measurements indicate the presence of a new planet... Read More about The GAPS programme with HARPS-N at TNG: IV. A planetary system around XO-2S⋆⋆⋆.

KIC 7582608: a new Kepler roAp star with frequency variability (2014)
Presentation / Conference
Holdsworth, D., Smalley, B., Kurtz, D., Southworth, J., Cunha, M., & Clubb, K. (2014, July). KIC 7582608: a new Kepler roAp star with frequency variability. Poster presented at The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting, Toulouse, France

We analyse the fifth roAp star reported in the Kepler field, KIC 7582608, discovered with the SuperWASP project. The object shows a high frequency pulsation at 181.7324d-1 (P = 7.9 min) with an amplitude of 1.45 mmag, and low frequency rotational mod... Read More about KIC 7582608: a new Kepler roAp star with frequency variability.

The GAPS Programme with HARPS-N at TNG: III: The retrograde orbit of HAT-P-18b (2014)
Journal Article
Esposito, M., Covino, E., Mancini, L., Harutyunyan, A., Southworth, J., Biazzo, K., …Smareglia, R. (2014). The GAPS Programme with HARPS-N at TNG: III: The retrograde orbit of HAT-P-18b. Astronomy & Astrophysics, 564, Article L13. https://doi.org/10.1051/0004-6361/201423735

The measurement of the Rossiter-McLaughlin effect for transiting exoplanets places constraints on the orientation of the orbital axis with respect to the stellar spin axis, which can shed light on the mechanisms shaping the orbital configuration of p... Read More about The GAPS Programme with HARPS-N at TNG: III: The retrograde orbit of HAT-P-18b.

Eclipsing Am binary systems in the SuperWASP survey (2014)
Journal Article
Smalley, B., Southworth, J., I. Pintado, O., Gillon, M., L. Holdsworth, D., R. Anderson, D., …J. Wheatley, P. (2014). Eclipsing Am binary systems in the SuperWASP survey. Astronomy & Astrophysics, 564, Article A69. https://doi.org/10.1051/0004-6361/201323158

The results of a search for eclipsing Am star binaries using photometry from the SuperWASP survey are presented. The light curves of 1742 Am stars fainter than V = 8.0 were analysed for the presence of eclipses. A total of 70 stars were found to exhi... Read More about Eclipsing Am binary systems in the SuperWASP survey.

Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b (2014)
Journal Article
Hellier, C., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Jehin, E., …West, R. (2014). Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b. Monthly Notices of the Royal Astronomical Society, 440(3), 1982 -1992. https://doi.org/10.1093/mnras/stu410

We report the discovery of the transiting exoplanets WASP-95b, WASP-96b, WASP-97b, WASP-98b, WASP-99b, WASP-100b and WASP-101b. All are hot Jupiters with orbital periods in the range 2.1–5.7 d, masses of 0.5–2.8 MJup and radii of 1.1–1.4 RJup. The or... Read More about Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b.

Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars (2014)
Journal Article
Delrez, L., Van Grootel, V., Anderson, D., Collier-Cameron, A., Doyle, A., Fumel, A., …West, R. (2014). Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars. Astronomy & Astrophysics, 563, Article A143. https://doi.org/10.1051/0004-6361/201323204

Using the WASP transit survey, we report the discovery of three new hot Jupiters, WASP-68 b, WASP-73 b and WASP-88 b. The planet WASP-68 bhas a mass of 0.95 ± 0.03 MJup, a radius of 1.24-0.06+0.10 RJup, and orbits a V = 10.7 G0-type star (1.24 ± 0.0... Read More about Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars.

KIC 3858884: a hybridδScuti pulsator in a highly eccentric eclipsing binary (2014)
Journal Article
Maceroni, C., Lehmann, H., da Silva, R., Montalbán, J., Lee, C., Ak, H., …Southworth, J. (2014). KIC 3858884: a hybridδScuti pulsator in a highly eccentric eclipsing binary. Astronomy & Astrophysics, 563, Article A59. https://doi.org/10.1051/0004-6361/201322871

Analysis of eclipsing binaries containing non-radial pulsators allows i) combining two different and independent sources of information on the internal structure and evolutionary status of the components and ii) studying the effects of tidal forces o... Read More about KIC 3858884: a hybridδScuti pulsator in a highly eccentric eclipsing binary.

Physical properties and transmission spectrum of the WASP-80 planetary system from multi-colour photometry (2014)
Journal Article
Mancini, L., Southworth, J., Ciceri, S., Dominik, M., Henning, T., Jørgensen, U. G., …Wertz, O. (2014). Physical properties and transmission spectrum of the WASP-80 planetary system from multi-colour photometry. Astronomy & Astrophysics, 562, Article A126. https://doi.org/10.1051/0004-6361/201323265

WASP-80 is one of only two systems known to contain a hot Jupiter which transits its M-dwarf host star. We present eight light curves of one transit event, obtained simultaneously using two defocussed telescopes. These data were taken through the Bes... Read More about Physical properties and transmission spectrum of the WASP-80 planetary system from multi-colour photometry.

High-frequency A-type pulsators discovered using SuperWASP(star)dagger (2014)
Journal Article
Holdsworth, D. L., Smalley, B., Gillon, M., Clubb, K. I., Southworth, J., Maxted, P. F. L., …Wheatley, P. J. (2014). High-frequency A-type pulsators discovered using SuperWASP(star)dagger. Monthly Notices of the Royal Astronomical Society, 439(2), 2078 - 2095. https://doi.org/10.1093/mnras/stu094

We present the results of a survey using the WASP archive to search for high-frequency pulsations in F-, A- and B-type stars. Over 1.5 million targets have been searched for pulsations with amplitudes greater than 0.5 millimagnitude. We identify over... Read More about High-frequency A-type pulsators discovered using SuperWASP(star)dagger.

WASP-103 b: a new planet at the edge of tidal disruption (2014)
Journal Article
Gillon, M., Anderson, D., Collier-Cameron, A., Delrez, L., Hellier, C., Jehin, E., …West, R. (2014). WASP-103 b: a new planet at the edge of tidal disruption. Astronomy & Astrophysics, 562, Article L3. https://doi.org/10.1051/0004-6361/201323014

We report the discovery of WASP-103?b, a new ultra-short-period planet (P = 22.2 h) transiting a 12.1 V-magnitude F8-type main-sequence star (1.22 ± 0.04 M?, 1.44-0.03+0.05 R?, Teff = 6110 ± 160 K). WASP-103?b is significantly more massive (1.49 ± 0.... Read More about WASP-103 b: a new planet at the edge of tidal disruption.

CoRoT 223992193: A new, low-mass, pre-main sequence eclipsing binary with evidence of a circumbinary disk (2014)
Journal Article
Gillen, E., Aigrain, S., McQuillan, A., Bouvier, J., Hodgkin, S., Alencar, S. H. P., …Micela, G. (2014). CoRoT 223992193: A new, low-mass, pre-main sequence eclipsing binary with evidence of a circumbinary disk. Astronomy & Astrophysics, 562, Article A50. https://doi.org/10.1051/0004-6361/201322493

We present the discovery of CoRoT 223992193, a double-lined, detached eclipsing binary, comprising two pre-main sequence M dwarfs, discovered by the CoRoT space mission during a 23-day observation of the 3 Myr old NGC 2264 star-forming region. Using... Read More about CoRoT 223992193: A new, low-mass, pre-main sequence eclipsing binary with evidence of a circumbinary disk.

A SUPER-JUPITER ORBITING A LATE-TYPE STAR: A REFINED ANALYSIS OF MICROLENSING EVENT OGLE-2012-BLG-0406 (2014)
Journal Article
Tsapras, Y., Choi, J., Street, R. A., Han, C., Bozza, V., Gould, A., …The MOA Collaboration. (in press). A SUPER-JUPITER ORBITING A LATE-TYPE STAR: A REFINED ANALYSIS OF MICROLENSING EVENT OGLE-2012-BLG-0406. Astrophysical Journal, 782(1), 48. https://doi.org/10.1088/0004-637x/782/1/48

We present a detailed analysis of survey and follow-up observations of microlensing event OGLE-2012-BLG-0406 based on data obtained from 10 different observatories. Intensive coverage of the light curve, especially the perturbation part, allowed us t... Read More about A SUPER-JUPITER ORBITING A LATE-TYPE STAR: A REFINED ANALYSIS OF MICROLENSING EVENT OGLE-2012-BLG-0406.

The eccentric massive binary V380 Cyg: revised orbital elements and interpretation of the intrinsic variability of the primary component* (2014)
Journal Article
Tkachenko, A., Degroote, P., Aerts, C., Pavlovski, K., Southworth, J., Pápics, P. I., …Clémer, K. (2014). The eccentric massive binary V380 Cyg: revised orbital elements and interpretation of the intrinsic variability of the primary component*. Monthly Notices of the Royal Astronomical Society, 438(4), 3093-3110. https://doi.org/10.1093/mnras/stt2421

We present a detailed analysis and interpretation of the high-mass binary V380 Cyg, based on high-precision space photometry gathered with the Kepler space mission as well as high-resolution ground-based spectroscopy obtained with the HERMES spectrog... Read More about The eccentric massive binary V380 Cyg: revised orbital elements and interpretation of the intrinsic variability of the primary component*.

Absolute dimensions of detached eclipsing binaries – III. The metallic-lined system YZ Cassiopeiae (2013)
Journal Article
Pavlovski, K., Southworth, J., Kolbas, V., & Smalley, B. (2014). Absolute dimensions of detached eclipsing binaries – III. The metallic-lined system YZ Cassiopeiae. Monthly Notices of the Royal Astronomical Society, 438(1), 590-603. https://doi.org/10.1093/mnras/stt2229

The bright binary system YZ Cassiopeiae is a remarkable laboratory for studying the Am phenomenon. It consists of a metallic-lined A2 star and an F2 dwarf on a circular orbit, which undergo total and annular eclipses. We present an analysis of 15 pub... Read More about Absolute dimensions of detached eclipsing binaries – III. The metallic-lined system YZ Cassiopeiae.

MOA-2010-BLG-328Lb: A SUB-NEPTUNE ORBITING VERY LATE M DWARF? (2013)
Journal Article
Furusawa, K., Udalski, A., Sumi, T., Bennett, D., Bond, I., Gould, A., …Collaboration, T. P. (2013). MOA-2010-BLG-328Lb: A SUB-NEPTUNE ORBITING VERY LATE M DWARF?. Astrophysical Journal, 779(2), Article 91. https://doi.org/10.1088/0004-637X/779/2/91

We analyze the planetary microlensing event MOA-2010-BLG-328. The best fit yields host and planetary masses of M h = 0.11 ± 0.01 M ? and M p = 9.2 ± 2.2 M ?, corresponding to a very late M dwarf and sub-Neptune-mass planet, respectively. The system l... Read More about MOA-2010-BLG-328Lb: A SUB-NEPTUNE ORBITING VERY LATE M DWARF?.

EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems (2013)
Journal Article
Maxted, P. F. L., Bloemen, S., Heber, U., Geier, S., Wheatley, P. J., Marsh, T. R., …Hadigal, S. (2014). EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems. Monthly Notices of the Royal Astronomical Society, 437(2), 1681-1697. https://doi.org/10.1093/mnras/stt2007

The star 1SWASP J024743.37−251549.2 was recently discovered to be a binary star in which an A-type dwarf star eclipses the remnant of a disrupted red giant star (WASP 0247−25 B). The remnant is in a rarely observed state evolving to higher effective... Read More about EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems.

Optical transmission photometry of the highly inflated exoplanet WASP-17b★ (2013)
Journal Article
Bento, J., Wheatley, P. J., Copperwheat, C. M., Fortney, J. J., Dhillon, V. S., Hickman, R., …Southworth, J. (2014). Optical transmission photometry of the highly inflated exoplanet WASP-17b★. Monthly Notices of the Royal Astronomical Society, 437(2), 1511-1518. https://doi.org/10.1093/mnras/stt1979

We present ground-based high-precision observations of the transit of WASP-17b using the multiband photometer ULTRACAM on ESO's New Technology Telescope (NTT) in the context of performing transmission spectrophotometry of this highly inflated exoplan... Read More about Optical transmission photometry of the highly inflated exoplanet WASP-17b★.

WEATHER ON THE NEAREST BROWN DWARFS: RESOLVED SIMULTANEOUS MULTI-WAVELENGTH VARIABILITY MONITORING OF WISE J104915.57–531906.1AB (2013)
Journal Article
Biller, B. A., Crossfield, I. J. M., Mancini, L., Ciceri, S., Southworth, J., Kopytova, T. G., …Goldman, B. (in press). WEATHER ON THE NEAREST BROWN DWARFS: RESOLVED SIMULTANEOUS MULTI-WAVELENGTH VARIABILITY MONITORING OF WISE J104915.57–531906.1AB. Astrophysical Journal Letters, 778(1), Article L10. https://doi.org/10.1088/2041-8205/778/1/l10

We present two epochs of MPG/ESO 2.2 m GROND simultaneous six-band (r'i'z' JHK) photometric monitoring of the closest known L/T transition brown dwarf binary WISE J104915.57−531906.1AB. We report here the first resolved variability monitoring of both... Read More about WEATHER ON THE NEAREST BROWN DWARFS: RESOLVED SIMULTANEOUS MULTI-WAVELENGTH VARIABILITY MONITORING OF WISE J104915.57–531906.1AB.

Erratum: Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system (2013)
Journal Article
Murphy, S. J., Pigulski, A., Kurtz, D. W., Suárez, J. C., Handler, G., Balona, L. A., …Southworth, J. (2013). Erratum: Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system. Monthly Notices of the Royal Astronomical Society, 436(3), 2877-2877. https://doi.org/10.1093/mnras/stt1749

The paper ‘Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system’ was published in MNRAS, 432, 2284 (2013). An error was inadvertently introduced in this paper during copyediting when the term ‘F0’ was globally r... Read More about Erratum: Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system.

EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Corrigendum) (2013)
Journal Article
Skottfelt, J., Bramich, D. M., Figuera Jaimes, R., Jørgensen, U. G., Kains, N., W Harpsøe, K. B., …Williams, A. (2013). EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Corrigendum). Astronomy & Astrophysics, 558, Article C1. https://doi.org/10.1051/0004-6361/201321430e

Erratum for: A&A 553, A111 (2013), DOI: 10.1051/0004-6361/201321430

Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry★ (2013)
Journal Article
Mancini, L., Ciceri, S., Chen, G., Tregloan-Reed, J., Fortney, J. J., Southworth, J., …Surdej, J. (2013). Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry★. Monthly Notices of the Royal Astronomical Society, 436(1), 2-18. https://doi.org/10.1093/mnras/stt1394

We present new ground-based, multi-colour, broad-band photometric measurements of the physical parameters, transmission and emission spectra of the transiting extrasolar planet WASP-19b. The measurements are based on observations of eight transits an... Read More about Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry★.

The solar-type eclipsing binary system LL Aquarii (2013)
Journal Article
Southworth, J. (2013). The solar-type eclipsing binary system LL Aquarii. Astronomy & Astrophysics, 557, Article A119. https://doi.org/10.1051/0004-6361/201322195

The eclipsing binary LL Aqr consists of two late-type stars in an eccentric orbit with a period of 20.17 d. We use an extensive light curve from the SuperWASP survey augmented by published radial velocities and UBV light curves to measure the physica... Read More about The solar-type eclipsing binary system LL Aquarii.

Physical properties of the eclipsingδ Scuti star KIC 10661783 (2013)
Journal Article
Lehmann, H., Southworth, J., Tkachenko, A., & Pavlovski, K. (2013). Physical properties of the eclipsingδ Scuti star KIC 10661783. Astronomy & Astrophysics, 557, Article A79. https://doi.org/10.1051/0004-6361/201321400

Context. KIC 10661783 is an eclipsing binary that shows δ Scuti-like oscillations. More than 60 pulsation frequencies have been detected in its light curve as observed by the Kepler satellite.

Aims. We want to determine the fundamental stellar and... Read More about Physical properties of the eclipsingδ Scuti star KIC 10661783.

Stellar Magnetism and starspots: the implications for exoplanets (2013)
Journal Article
Vilela, C., Southworth, J., & del Burgo, C. (2013). Stellar Magnetism and starspots: the implications for exoplanets. Proceedings of the International Astronomical Union, 9(S302), 247-250. https://doi.org/10.1017/s1743921314002208

Stellar variability induced by starspots can hamper the detection of exoplanets and bias planet property estimations. These features can also be used to study star-planet interactions as well as inferring properties from the underlying stellar dynamo... Read More about Stellar Magnetism and starspots: the implications for exoplanets.

Simultaneous follow-up of planetary transits: revised physical properties for the planetary systems HAT-P-16 and WASP-21 (2013)
Journal Article
Ciceri, S., Mancini, L., Southworth, J., Nikolov, N., Bozza, V., Bruni, I., …Henning, T. (2013). Simultaneous follow-up of planetary transits: revised physical properties for the planetary systems HAT-P-16 and WASP-21. Astronomy & Astrophysics, 557, Article A30. https://doi.org/10.1051/0004-6361/201321669

Context. By now, more than 300 planets transiting their host star have been found, and much effort is being put into measuring the properties of each system. Light curves of planetary transits often contain deviations from a simple transit shape, and... Read More about Simultaneous follow-up of planetary transits: revised physical properties for the planetary systems HAT-P-16 and WASP-21.

KIC 8410637: a 408-day period eclipsing binary containing a pulsating giant star (2013)
Journal Article
Frandsen, S., Lehmann, H., Hekker, S., Southworth, J., Debosscher, J., Beck, P., …Elsworth, Y. (2013). KIC 8410637: a 408-day period eclipsing binary containing a pulsating giant star. Astronomy & Astrophysics, 556, Article A138. https://doi.org/10.1051/0004-6361/201321817

Context. Detached eclipsing binaries (dEBs) are ideal targets for accurately measuring the masses and radii of their component stars. If at least one of the stars has evolved off the main sequence (MS), the masses and radii give a strict constraint o... Read More about KIC 8410637: a 408-day period eclipsing binary containing a pulsating giant star.

ENIGMATIC RECURRENT PULSATIONAL VARIABILITY OF THE ACCRETING WHITE DWARF EQ LYN (SDSS J074531.92+453829.6) (2013)
Journal Article
Mukadam, A. S., Townsley, D. M., Szkody, P., Gänsicke, B. T., Southworth, J., Brockett, T., …Qian, S. (2013). ENIGMATIC RECURRENT PULSATIONAL VARIABILITY OF THE ACCRETING WHITE DWARF EQ LYN (SDSS J074531.92+453829.6). Astronomical Journal, 146(3), Article 54. https://doi.org/10.1088/0004-6256/146/3/54

Photometric observations of the cataclysmic variable EQ Lyn (SDSS J074531.92+453829.6), acquired from 2005 October to 2006 January, revealed high-amplitude variability in the range 1166–1290 s. This accreting white dwarf underwent an outburst in 2006... Read More about ENIGMATIC RECURRENT PULSATIONAL VARIABILITY OF THE ACCRETING WHITE DWARF EQ LYN (SDSS J074531.92+453829.6).

KIC 11285625: A double-lined spectroscopic binary with a γ Doradus pulsator discovered from Kepler space photometry (2013)
Journal Article
Debosscher, J., Aerts, C., Tkachenko, A., Pavlovski, K., Maceroni, C., Kurtz, D., …Southworth, J. (2013). KIC 11285625: A double-lined spectroscopic binary with a γ Doradus pulsator discovered from Kepler space photometry. Astronomy & Astrophysics, 556, Article A56. https://doi.org/10.1051/0004-6361/201321702

Aims. We present the first binary modelling results for the pulsating, eclipsing binary KIC 11285625 that was discovered by the Kepler mission. An automated method to disentangle the pulsation spectrum and the orbital variability in high quality ligh... Read More about KIC 11285625: A double-lined spectroscopic binary with a γ Doradus pulsator discovered from Kepler space photometry.

KIC 4544587: an eccentric, short-period binary system with δ Sct pulsations and tidally excited modes (2013)
Journal Article
Hambleton, K. M., Kurtz, D. W., Prša, A., Guzik, J. A., Pavlovski, K., Bloemen, S., …Fuller, J. (2013). KIC 4544587: an eccentric, short-period binary system with δ Sct pulsations and tidally excited modes. Monthly Notices of the Royal Astronomical Society, 434(2), 925-940. https://doi.org/10.1093/mnras/stt886

We present Kepler photometry and ground-based spectroscopy of KIC 4544587, a short-period eccentric eclipsing binary system with self-excited pressure and gravity modes, tidally excited modes, tidally influenced p modes and rapid apsidal motion of 18... Read More about KIC 4544587: an eccentric, short-period binary system with δ Sct pulsations and tidally excited modes.

A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry★ (2013)
Journal Article
Arellano Ferro, A., Bramich, D. M., Figuera Jaimes, R., Giridhar, S., Kains, N., Kuppuswamy, K., …Wertz, O. (2013). A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry★. Monthly Notices of the Royal Astronomical Society, 434(2), 1220-1238. https://doi.org/10.1093/mnras/stt1080

We report CCD V and I time series photometry of the globular cluster NGC 6333 (M9). The technique of difference image analysis has been used, which enables photometric precision better than 0.05 mag for stars brighter than V ∼ 19.0 mag, even in the c... Read More about A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry★.

High-precision photometry by telescope defocusing – V. WASP-15 and WASP-16★ (2013)
Journal Article
Southworth, J., Mancini, L., Browne, P., Burgdorf, M., Calchi Novati, S., Dominik, M., …Wertz, O. (2013). High-precision photometry by telescope defocusing – V. WASP-15 and WASP-16★. Monthly Notices of the Royal Astronomical Society, 434(2), 1300-1308. https://doi.org/10.1093/mnras/stt1089

We present new photometric observations of WASP-15 and WASP-16, two transiting extrasolar planetary systems with measured orbital obliquities but without photometric follow-up since their discovery papers. Our new data for WASP-15 comprise observatio... Read More about High-precision photometry by telescope defocusing – V. WASP-15 and WASP-16★.

Transmission photometry of WASP-12b: simultaneous measurement of the planetary radius in three bands (2013)
Journal Article
Copperwheat, C. M., Wheatley, P. J., Southworth, J., Bento, J., Marsh, T. R., Dhillon, V. S., …Hickman, R. (2013). Transmission photometry of WASP-12b: simultaneous measurement of the planetary radius in three bands. Monthly Notices of the Royal Astronomical Society, 434(1), 661-670. https://doi.org/10.1093/mnras/stt1056

Transmission spectroscopy has been successfully used from both the ground and in space to characterize the atmospheres of transiting exoplanets. This technique is challenging from the ground because ground-based spectrographs tend not to be designed... Read More about Transmission photometry of WASP-12b: simultaneous measurement of the planetary radius in three bands.

Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry (2013)
Journal Article
Kains, N., Bramich, D. M., Arellano Ferro, A., Figuera Jaimes, R., Jørgensen, U. G., Giridhar, S., …(The MiNDSTEp consortium). (2013). Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry. Astronomy & Astrophysics, 555, Article A36. https://doi.org/10.1051/0004-6361/201321819

Aims. We present the analysis of 26 nights of V and I time-series observations from 2011 and 2012 of the globular cluster M 30 (NGC 7099). We used our data to search for variable stars in this cluster and refine the periods of known variables; we the... Read More about Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry.

The GAPS programme with HARPS-N at TNG: I. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting system Qatar-1⋆⋆⋆⋆⋆ (2013)
Journal Article
Covino, E., Esposito, M., Barbieri, M., Mancini, L., Nascimbeni, V., Claudi, R., …Turrini, D. (2013). The GAPS programme with HARPS-N at TNG: I. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting system Qatar-1⋆⋆⋆⋆⋆. Astronomy & Astrophysics, 554, Article A28. https://doi.org/10.1051/0004-6361/201321298

Context. Our understanding of the formation and evolution of planetary systems is still fragmentary because most of the current data provide limited information about the orbital structure and dynamics of these systems. The knowledge of the orbital p... Read More about The GAPS programme with HARPS-N at TNG: I. Observations of the Rossiter-McLaughlin effect and characterisation of the transiting system Qatar-1⋆⋆⋆⋆⋆.

The GAPS programme with HARPS-N at TNG: II. No giant planets around the metal-poor star HIP 11952⋆⋆⋆ (2013)
Journal Article
Desidera, S., Sozzetti, A., Bonomo, A. S., Gratton, R., Poretti, E., Claudi, R., …Southworth, J. (2013). The GAPS programme with HARPS-N at TNG: II. No giant planets around the metal-poor star HIP 11952⋆⋆⋆. Astronomy & Astrophysics, 554, Article A29. https://doi.org/10.1051/0004-6361/201321155

In the context of the programme Global Architecture of Planetary Systems (GAPS), we have performed radial velocity monitoring of the metal-poor star HIP 11952 on 35 nights during about 150 days using the newly installed high-resolution spectrograph H... Read More about The GAPS programme with HARPS-N at TNG: II. No giant planets around the metal-poor star HIP 11952⋆⋆⋆.

Two new SB2 binaries with main sequence B-type pulsators in theKeplerfield (2013)
Journal Article
Pápics, P. I., Tkachenko, A., Aerts, C., Briquet, M., Marcos-Arenal, P., Beck, P. G., …Debosscher, J. (2013). Two new SB2 binaries with main sequence B-type pulsators in theKeplerfield. Astronomy & Astrophysics, 553, A127. https://doi.org/10.1051/0004-6361/201321088

Context. OB stars are important in the chemistry and evolution of the Universe, but the sample of targets that is well understood from an asteroseismological point of view is still too limited to provide feedback on the current evolutionary models.... Read More about Two new SB2 binaries with main sequence B-type pulsators in theKeplerfield.

EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (2013)
Journal Article
Skottfelt, J., Bramich, D. M., Figuera Jaimes, R., Jørgensen, U. G., Kains, N., W Harpsøe, K. B., …Williams, A. (2013). EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981. Astronomy & Astrophysics, 553, Article A111. https://doi.org/10.1051/0004-6361/201321430

Two previously unknown variable stars in the crowded central region of the globular cluster NGC 6981 are presented. The observations were made using the electron multiplying CCD (EMCCD) camera at the Danish 1.54 m Telescope at La Silla, Chile. The tw... Read More about EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981.

Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system (2013)
Journal Article
Murphy, S. J., Pigulski, A., Kurtz, D. W., Suárez, J. C., Handler, G., Balona, L. A., …Southworth, J. (2013). Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system. Monthly Notices of the Royal Astronomical Society, 432(3), 2284-2297. https://doi.org/10.1093/mnras/stt587

The candidate SX Phe star KIC 11754974 shows a remarkably high number of combination frequencies in the Fourier amplitude spectrum: 123 of the 166 frequencies in our multifrequency fit are linear combinations of independent modes. Predictable pattern... Read More about Asteroseismology of KIC 11754974: a high-amplitude SX Phe pulsator in a 343-d binary system.

MOA-2010-BLG-311: A PLANETARY CANDIDATE BELOW THE THRESHOLD OF RELIABLE DETECTION (2013)
Journal Article
Yee, J. C., Hung, L., Bond, I. A., Allen, W., Monard, L. A. G., Albrow, M. D., …Consortium, T. M. (in press). MOA-2010-BLG-311: A PLANETARY CANDIDATE BELOW THE THRESHOLD OF RELIABLE DETECTION. Astrophysical Journal, 769(1), Article 77. https://doi.org/10.1088/0004-637x/769/1/77

We analyze MOA-2010-BLG-311, a high magnification (Amax > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find th... Read More about MOA-2010-BLG-311: A PLANETARY CANDIDATE BELOW THE THRESHOLD OF RELIABLE DETECTION.

Refined physical properties andg′,r′,i′,z′,J, H, Ktransmission spectrum of WASP-23b from the ground (2013)
Journal Article
Nikolov, N., Chen, G., Fortney, J. J., Mancini, L., Southworth, J., van Boekel, R., & Henning, T. (2013). Refined physical properties andg′,r′,i′,z′,J, H, Ktransmission spectrum of WASP-23b from the ground. Astronomy & Astrophysics, 553, Article A26. https://doi.org/10.1051/0004-6361/201321084

Context. Multi-band observations of planetary transits using the telescope defocus technique may yield high-quality light curves suitable for refining the physical properties of exoplanets even with small or medium size telescopes. Such observations... Read More about Refined physical properties andg′,r′,i′,z′,J, H, Ktransmission spectrum of WASP-23b from the ground.

MICROLENSING DISCOVERY OF A POPULATION OF VERY TIGHT, VERY LOW MASS BINARY BROWN DWARFS (2013)
Journal Article
Choi, J., Han, C., Udalski, A., Sumi, T., Gaudi, B. S., Gould, A., …The RoboNet Collaboration. (in press). MICROLENSING DISCOVERY OF A POPULATION OF VERY TIGHT, VERY LOW MASS BINARY BROWN DWARFS. Astrophysical Journal, 768(2), Article 129. https://doi.org/10.1088/0004-637x/768/2/129

Although many models have been proposed, the physical mechanisms responsible for the formation of low-mass brown dwarfs (BDs) are poorly understood. The multiplicity properties and minimum mass of the BD mass function provide critical empirical diagn... Read More about MICROLENSING DISCOVERY OF A POPULATION OF VERY TIGHT, VERY LOW MASS BINARY BROWN DWARFS.

Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m (2013)
Journal Article
Mahtani, D. P., Mahtani, D. P., Maxted, P. F. L., Anderson, D. R., Smith, A. M. S., Smalley, B., …West, R. G. (2013). Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m. Monthly Notices of the Royal Astronomical Society, 432(1), 693-701. https://doi.org/10.1093/mnras/stt505

We present new warm Spitzer occultation photometry of WASP-26 at 3.6{\mu}m and 4.5{\mu}m along with new transit photometry taken in the g,r and i bands. We report the first detection of the occultation of WASP-26b, with occultation depths at 3.6{\mu}... Read More about Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m.

WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star (2013)
Journal Article
Smith, A. M. S., Anderson, D. R., Bouchy, F., Collier Cameron, A., Doyle, A. P., Fumel, A., …West, R. G. (2013). WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star. Astronomy & Astrophysics, 552, Article A120. https://doi.org/10.1051/0004-6361/201220727

We report the discovery by the WASP transit survey of a highly-irradiated, massive (2.242 ± 0.080 MJup) planet which transits a bright (V = 10.6), evolved F8 star every 2.9 days. The planet, WASP-71b, is larger than Jupiter (1.46 ± 0.13 RJup), but le... Read More about WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star.

WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets (2013)
Journal Article
Gillon, M., Anderson, D. R., Collier-Cameron, A., Doyle, A. P., Fumel, A., Hellier, C., …West, R. G. (2013). WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets. Astronomy & Astrophysics, 552, Article A82. https://doi.org/10.1051/0004-6361/201220561

We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 ± 0.068 MJup) and larger (1.271 ± 0.039 RJup) than Jupiter, and is in very-short (a = 0.02648 ± 0.00024 AU, P = 1... Read More about WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets.

A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251 (2013)
Journal Article
Kains, N., Street, R. A., Choi, J., Han, C., Udalski, A., Almeida, L. A., …Zub, M. (2013). A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251. Astronomy & Astrophysics, 552, Article A70. https://doi.org/10.1051/0004-6361/201220626

Aims. We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge.

Methods. Ba... Read More about A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251.

A J-band detection of the sub-stellar mass donor in SDSS J1433+1011 (2013)
Journal Article
Littlefair, S. P., Savoury, C. D. J., Dhillon, V. S., Marsh, T. R., Gänsicke, B. T., Butterleym, T., …Watson, C. A. (2013). A J-band detection of the sub-stellar mass donor in SDSS J1433+1011. Monthly Notices of the Royal Astronomical Society, 431(3), 2820-2825. https://doi.org/10.1093/mnras/stt378

We present time-resolved J-band spectroscopy of the short-period cataclysmic variable SDSS J143317.78+101123.3. We detect absorption lines from the sub-stellar donor star in this system, which contributes 38 ± 5 per cent to the J-band light. From the... Read More about A J-band detection of the sub-stellar mass donor in SDSS J1433+1011.

An extremely high photometric precision in ground-based observations of two transits in the WASP-50 planetary system (2013)
Journal Article
Tregloan-Reed, J., & Southworth, J. (2013). An extremely high photometric precision in ground-based observations of two transits in the WASP-50 planetary system. Monthly Notices of the Royal Astronomical Society, 431(1), 966-971. https://doi.org/10.1093/mnras/stt227

We present photometric observations of two transits in the WASP-50 planetary system, obtained using the ESO New Technology Telescope and the defocused-photometry technique. The rms scatters for the two data sets are 258 and 211 ppm with a cadence of... Read More about An extremely high photometric precision in ground-based observations of two transits in the WASP-50 planetary system.

Multi-site campaign for transit timing variations of WASP-12 b: possible detection of a long-period signal of planetary origin (2013)
Journal Article
Maciejewski, G., Dimitrov, D., Seeliger, M., Raetz, S., Bukowiecki, Ł., Kitze, M., …Chen, W. P. (2013). Multi-site campaign for transit timing variations of WASP-12 b: possible detection of a long-period signal of planetary origin. Astronomy & Astrophysics, 551, Article A108. https://doi.org/10.1051/0004-6361/201220739

Aims. The transiting planet WASP-12 b was identified as a potential target for transit-timing studies because a departure from a linear ephemeris has been reported in the literature. Such deviations could be caused by an additional planet in the syst... Read More about Multi-site campaign for transit timing variations of WASP-12 b: possible detection of a long-period signal of planetary origin.

Flux and color variations of the doubly imaged quasar UM673 (2013)
Journal Article
Ricci, D., Elyiv, A., Finet, F., Wertz, O., Alsubai, K., Anguita, T., …Surdej, J. (2013). Flux and color variations of the doubly imaged quasar UM673. Astronomy & Astrophysics, 551, Article A104. https://doi.org/10.1051/0004-6361/201118755

Aims. With the aim of characterizing the flux and color variations of the multiple components of the gravitationally lensed quasar UM673 as a function of time, we have performed multiepoch and multiband photometric observations with the Danish telesc... Read More about Flux and color variations of the doubly imaged quasar UM673.

Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry (2013)
Journal Article
Mancini, L., Nikolov, N., Southworth, J., Chen, G., Fortney, J. J., Tregloan-Reed, J., …Henning, T. (2013). Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry. Monthly Notices of the Royal Astronomical Society, 430(4), 2932-2942. https://doi.org/10.1093/mnras/stt095

We present ground-based broad-band photometry of two transits in the WASP-44 planetary system obtained simultaneously through four optical (Sloan g′, r′, i′, z′) and three near-infrared (NIR; J, H, K) filters. We achieved low scatters of 1–2 mmag per... Read More about Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry.

A lower radius and mass for the transiting extrasolar planet HAT-P-8 b (2013)
Journal Article
Mancini, L., Southworth, J., Ciceri, S., Fortney, J. J., Morley, C. V., Dittmann, J. A., …Henning, T. (2013). A lower radius and mass for the transiting extrasolar planet HAT-P-8 b. Astronomy & Astrophysics, 551, Article A11. https://doi.org/10.1051/0004-6361/201220291

Context. The extrasolar planet HAT-P-8 b was thought to be one of the more inflated transiting hot Jupiters.

Aims. By using new and existing photometric data, we computed precise estimates of the physical properties of the system.

Methods. We p... Read More about A lower radius and mass for the transiting extrasolar planet HAT-P-8 b.

MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR (2013)
Journal Article
Gould, A., Yee, J. C., Bond, I. A., Udalski, A., Han, C., Jørgensen, U. G., …The PLANET Collaboration. (in press). MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR. Astrophysical Journal, 763(2), Article 141. https://doi.org/10.1088/0004-637x/763/2/141

The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing light curve near the peak of an Amax ∼ 265 high-magnification microlensing event. The deviations originally seemed consistent with expectations f... Read More about MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR.

WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets (2013)
Journal Article
Hébrard, G., Collier Cameron, A., Brown, D. J. A., Díaz, R. F., Faedi, F., Smalley, B., …Wheatley, P. J. (2013). WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets. Astronomy & Astrophysics, 549, Article A134. https://doi.org/10.1051/0004-6361/201220363

We present the discovery of four new transiting hot Jupiters, detected mainly from SuperWASP-North and SOPHIE observations. These new planets, WASP-52b, WASP-58b, WASP-59b, and WASP-60b, have orbital periods ranging from 1.7 to 7.9 days, masses betwe... Read More about WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets.

MOA-2010-BLG-073L: AN M-DWARF WITH A SUBSTELLAR COMPANION AT THE PLANET/BROWN DWARF BOUNDARY (2013)
Journal Article
Street, R. A., Choi, J., Tsapras, Y., Han, C., Furusawa, K., Hundertmark, M., …MiNDSTEp. (2013). MOA-2010-BLG-073L: AN M-DWARF WITH A SUBSTELLAR COMPANION AT THE PLANET/BROWN DWARF BOUNDARY. Astrophysical Journal, 763(1), Article 67. https://doi.org/10.1088/0004-637x/763/1/67

We present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010 March 18. This event was remarkable because the source was previously known to be photometrically... Read More about MOA-2010-BLG-073L: AN M-DWARF WITH A SUBSTELLAR COMPANION AT THE PLANET/BROWN DWARF BOUNDARY.

The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation (2012)
Journal Article
Harpsøe, K. B. W., Hardis, S., Hinse, T. C., Jørgensen, U. G., Mancini, L., Southworth, J., …Wertz, O. (2013). The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation. Astronomy & Astrophysics, 549, Article A10. https://doi.org/10.1051/0004-6361/201219996

Aims. We present 11 high-precision photometric transitobservations of the transiting super-Earth planet GJ 1214 b. Combining these data with observations from other authors, we investigate the ephemeris for possible signs of transit timing variations... Read More about The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation.

Transits and starspots in the WASP-19 planetary system (2012)
Journal Article
Tregloan-Reed, J., Southworth, J., & Tappert, C. (2013). Transits and starspots in the WASP-19 planetary system. Monthly Notices of the Royal Astronomical Society, 428(4), 3671-3679. https://doi.org/10.1093/mnras/sts306

We have developed a new model for analysing light curves of planetary transits when there are starspots on the stellar disc. Because the parameter space contains a profusion of local minima we developed a new optimization algorithm which combines the... Read More about Transits and starspots in the WASP-19 planetary system.

Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18 (2012)
Journal Article
Maxted, P., Anderson, D. R., Doyle, A. P., Gillon, M., Harrington, J., Iro, N., …Southworth, J. (2013). Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18. Monthly Notices of the Royal Astronomical Society, 428(3), 2645-2660. https://doi.org/10.1093/mnras/sts231

We present new lightcurves of the massive hot Jupiter system WASP-18 obtained with the Spitzer spacecraft covering the entire orbit at 3.6 micron and 4.5 micron. These lightcurves are used to measure the amplitude, shape and phase of the thermal phas... Read More about Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18.

WASP-78b and WASP-79b: Two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus (2012)
Journal Article
Smalley, B., R. Anderson, D., Collier-Cameron, A., P. Doyle, A., Fumel, A., Gillon, M., …G. West, R. (2012). WASP-78b and WASP-79b: Two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus. Astronomy and Astrophysics, 547, Article A61. https://doi.org/10.1051/0004-6361/201219731

We report the discovery of WASP-78b and WASP-79b, two highly-bloated Jupiter-mass exoplanets orbiting F-type host stars. WASP-78b orbits its V=12.0 host star (TYC 5889-271-1) every 2.175 days and WASP-79b orbits its V=10.1 host star (CD-30 1812) ever... Read More about WASP-78b and WASP-79b: Two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus.

HSTEP -- Homogeneous Studies of Transiting Extrasolar Planets (2012)
Conference Proceeding
Southworth, J. (2012). HSTEP -- Homogeneous Studies of Transiting Extrasolar Planets. . https://doi.org/10.1017/S174392131301332X

I give a summary of the HSTEP project: an effort to calculate the physical properties of the known transiting extrasolar planets using a homogeneous approach. I discuss the motivation for the project, list the 83 planets which have already been studi... Read More about HSTEP -- Homogeneous Studies of Transiting Extrasolar Planets.

Eclipsing Binary Stars: the Royal Road to Stellar Astrophysics (2012)
Conference Proceeding
Taylor. (2012). Eclipsing Binary Stars: the Royal Road to Stellar Astrophysics. In Proceedings of the workshop "Orbital Couples: Pas de Deux in the Solar System and the Milky Way" (51-58)

Russell (1948) famously described eclipses as the "royal road" to stellar astrophysics. From photometric and spectroscopic observations it is possible to measure the masses and radii (to 1% or better!), and thus surface gravities and mean densities,... Read More about Eclipsing Binary Stars: the Royal Road to Stellar Astrophysics.

SuperWASP observations of pulsating Am stars (2011)
Journal Article
Smalley, B., Kurtz, D., Smith, A. S., Fossati, L., Anderson, D., Barros, S. C., …Wood, P. L. (2011). SuperWASP observations of pulsating Am stars. Astronomy & Astrophysics, 535, Article A3. https://doi.org/10.1051/0004-6361/201117230

We have studied over 1600 Am stars at a photometric precision of 1 mmag with SuperWASP photometric data. Contrary to previous belief, we find that around 200 Am stars are pulsating delta Sct and gamma Dor stars, with low amplitudes that have been mis... Read More about SuperWASP observations of pulsating Am stars.

WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system (2011)
Journal Article
Smalley, B., R. Anderson, D., Collier Cameron, A., Hellier, C., Lendl, M., F. L. Maxted, P., …Bento, J. (2011). WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201015992

We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e = 0.038 +/- 0.012). We find a planeta... Read More about WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system.

WASP-26b: A 1-Jupiter-mass planet around an early-G-type star (2010)
Journal Article
Smalley, B., R. Anderson, D., Collier Cameron, A., Gillon, M., Hellier, C., A. Lister, T., …Bento, J. (2010). WASP-26b: A 1-Jupiter-mass planet around an early-G-type star. Astronomy & Astrophysics, 520, Article A56. https://doi.org/10.1051/0004-6361/201014705

We report the discovery of WASP-26b, a moderately over-sized Jupiter-mass exoplanet transiting its 11.3-magnitude early-G-type host star (1SWASP J001824.70-151602.3; TYC 5839-876-1) every 2.7566 days. A simultaneous fit to transit photometry and radi... Read More about WASP-26b: A 1-Jupiter-mass planet around an early-G-type star.

The ultra-compact binary candidate KUV 23182+1007 is a bright quasar (2007)
Journal Article
Southworth, J., Schwope, A., Gaensicke, B., & Schreiber, M. (2007). The ultra-compact binary candidate KUV 23182+1007 is a bright quasar. arXiv,

KUV 23182+1007 was identified as a blue object in the Kiso UV Survey in the 1980s. Classification-dispersion spectroscopy showed a featureless continuum except for a strong emission line in the region of He II 4686 A. This is a hallmark of the rare A... Read More about The ultra-compact binary candidate KUV 23182+1007 is a bright quasar.

Eclipsing Binaries in Open Clusters (2006)
Journal Article
Southworth, J., & Viggo Clausen, J. (2006). Eclipsing Binaries in Open Clusters. Astrophysics and Space Science, 304, Article 199–202. https://doi.org/10.1007/s10509-006-9110-3

Detached eclipsing binaries are very useful objects for calibrating theoretical stellar models and checking their predictions. Detached eclipsing binaries in open clusters are particularly important because of the additional constraints on their age... Read More about Eclipsing Binaries in Open Clusters.

Accurate fundamental parameters of eclipsing binary stars (2004)
Journal Article
Southworth, J., Smalley, B., Maxted, P., & Etzel, P. (2004). Accurate fundamental parameters of eclipsing binary stars. Proceedings of the International Astronomical Union, 2004(IAUS224), 548-561. https://doi.org/10.1017/S1743921305009324

The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW Aurigae, whic... Read More about Accurate fundamental parameters of eclipsing binary stars.

Eclipsing binaries in open clusters (2003)
Conference Proceeding
Southworth, J., Maxted, P., & Smalley, B. (2003). Eclipsing binaries in open clusters.

Accurate physical parameters have been determined for two early-type detached eclipsing binaries in the open cluster h Persei (NGC 869). Masses accurate to 1.5% are derived from high-resolution spectroscopy and radii accurate to 4--6% have been obtai... Read More about Eclipsing binaries in open clusters.

Observational studies of transiting extrasolar planets (invited review)
Presentation / Conference
Southworth, J. Observational studies of transiting extrasolar planets (invited review). Presented at Living Together: Planets, Host Stars and Binaries, Litomysl, Czech Republic

The study of transiting extrasolar planets is only 15 years old, but has matured into a rich area of research. I review the observational aspects of this work, concentrating on the discovery of transits, the characterisation of planets from photometr... Read More about Observational studies of transiting extrasolar planets (invited review).