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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.