All Outputs (257)

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.

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.

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