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200 papers

We recommend that the search for exoplanets around binary stars be extended to include X-ray binaries in which the accretor is a white dwarf, neutron star, or black hole. We present a novel idea for detecting planets bound to such mass…

Earth and Planetary Astrophysics · Physics 2018-06-06 Nia Imara , Rosanne Di Stefano

Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them,…

Earth and Planetary Astrophysics · Physics 2024-06-04 Michaël Gillon , Peter P. Pedersen , Benjamin V. Rackham , Georgina Dransfield , Elsa Ducrot , Khalid Barkaoui , Artem Y. Burdanov , Urs Schroffenegger , Yilen Gómez Maqueo Chew , Susan M. Lederer , Roi Alonso , Adam J. Burgasser , Steve B. Howell , Norio Narita , Julien de Wit , Brice-Olivier Demory , Didier Queloz , Amaury H. M. J. Triaud , Laetitia Delrez , Emmanuël Jehin , Matthew J. Hooton , Lionel J. Garcia , Clàudia Jano Muñoz , Catriona A. Murray , Francisco J. Pozuelos , Daniel Sebastian , Mathilde Timmermans , Samantha J. Thompson , Sebastián Zúñiga-Fernández 1 , Jesús Aceituno , Christian Aganze , Pedro J. Amado , Thomas Baycroft , Zouhair Benkhaldoun , David Berardo , Emeline Bolmont , Catherine A. Clark , Yasmin T. Davis , Fatemeh Davoudi , Zoë L. de Beurs , Jerome P. de Leon , Masahiro Ikoma , Kai Ikuta , Keisuke Isogai , Izuru Fukuda , Akihiko Fukui , Roman Gerasimov , Mourad Ghachoui , Maximilian N. Günther , Samantha Hasler , Yuya Hayashi , Kevin Heng , Renyu Hu , Taiki Kagetani , Yugo Kawai , Kiyoe Kawauchi , Daniel Kitzmann , Daniel D. B. Koll , Monika Lendl , John H. Livingston , Xintong Lyu , Erik A. Meier Valdés , Mayuko Mori , James J. McCormac , Felipe Murgas , Prajwal Niraula , Enric Pallé , Ilse Plauchu-Frayn , Rafael Rebolo , Laurence Sabin , Yannick Schackey , Nicole Schanche , Franck Selsis , Alfredo Sota , Manu Stalport , Matthew R. Standing , Keivan G. Stassun , Motohide Tamura , Christopher A. Theissen , Martin Turbet , Valérie Van Grootel , Roberto Varas , Noriharu Watanabe , Francis Zong Lang

As part of our ongoing effort to measure exoplanet sizes and transit times with greater accuracy, we present I band observations of two transits of OGLE-TR-111b. The photometry has an accuracy of 0.15-0.20% and a cadence of 1-2 minutes. We…

Astrophysics · Physics 2009-11-11 Joshua N. Winn , Matthew J. Holman , Cesar I. Fuentes

The search for double transit planetary systems opens new possibilities for the transit searches and for studies of orbital stability, stellar irradiation, and migration scenarios, among others. We explore the OGLE lightcurves of stars with…

Astrophysics · Physics 2007-05-23 Dante Minniti

We present the results of a deep, wide-field transit survey targeting Hot Jupiter planets in the Lupus region of the Galactic plane conducted over 53 nights concentrated in two epochs separated by a year. Using the Australian National…

Earth and Planetary Astrophysics · Physics 2009-11-13 D. D. R. Bayliss , D. T. F. Weldrake , P. D. Sackett , B. W. Tingley , K. M. Lewis

The coolest dwarf stars targeted by the Kepler Mission constitute a relatively small but scientifically valuable subset of the Kepler target stars, and provide a high-fidelity and nearby sample of transiting planetary systems. Using…

Earth and Planetary Astrophysics · Physics 2015-03-05 Jonathan J. Swift , Benjamin T. Montet , Andrew Vanderburg , Timothy Morton , Philip S. Muirhead , John Asher Johnson

Meter-sized ground-based telescopes are frequently used today for the follow-up of extrasolar planet candidates. While the transit signal of a Jupiter-sized object can typically be detected to a high level of confidence with small telescope…

Earth and Planetary Astrophysics · Physics 2022-01-19 M. Mallonn , K. Poppenhaeger , T. Granzer , M. Weber , K. G. Strassmeier

We describe a new transit detection algorithm designed to detect single transit events in discontinuous Perkins INfrared Exosatellite Survey (PINES) observations of L and T dwarfs. We use this algorithm to search for transits in 131 PINES…

Since 2008 we have run an observational program to accurately measure the characteristics of known exoplanet systems hosting close-in transiting giant planets, i.e. hot Jupiters. Our study is based on high-quality photometric follow-up…

Earth and Planetary Astrophysics · Physics 2016-05-19 Luigi Mancini , John Southworth

We present a database of well determined orbital parameters of exoplanets. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the…

Mass is one of the most important parameters for determining the true nature of an astronomical object. Yet, many published exoplanets lack a measurement of their true mass, in particular those detected thanks to radial velocity (RV)…

Earth and Planetary Astrophysics · Physics 2021-01-04 Flavien Kiefer , Guillaume Hébrard , Alain Lecavelier , Eder Martioli , Shweta Dalal , Alfred Vidal-Madjar

We present thirteen new transit light curves for the WASP-1 b exoplanet. Observations were acquired with 0.5 - 1.2-m telescopes between 2007 and 2013. Our homogeneous analysis, which also includes the literature data, results in determining…

Earth and Planetary Astrophysics · Physics 2014-02-27 G. Maciejewski , J. Ohlert , D. Dimitrov , D. Puchalski , J. Nedoroščík , M. Vaňko , C. Marka , S. Baar , St. Raetz , M. Seeliger , R. Neuhäuser

Forty transits of the exoplanets HAT-P-12b, HAT-P-13b, HAT-P-16b, HAT-P-23b and WASP-10b were recorded with the 0.36m telescope at the Universidad de Monterrey Observatory. The images were captured with a standard Johnson-Cousins Rc and Ic…

Earth and Planetary Astrophysics · Physics 2016-03-09 Pedro V. Sada , Felipe G. Ramón-Fox

Observations of 43 complete transits of the hot Jupiter exoplanet HAT-P-32b using the MicroObservatory 0.15-m robotic telescope network covering a period of 7 years are presented. Compared with the most recent ephemeris for the system, the…

Earth and Planetary Astrophysics · Physics 2021-12-17 Martin J F Fowler , Frank F. Sienkiewicz , Robert T. Zellem , Mary E. Dussault

We initiated the Robo-AO Kepler Planetary Candidate Survey in 2012 to observe each Kepler exoplanet candidate host star with high-angular-resolution visible-light laser-adaptive-optics imaging. Our goal is to find nearby stars lying in…

Earth and Planetary Astrophysics · Physics 2016-07-06 Christoph Baranec , Carl Ziegler , Nicholas M. Law , Tim Morton , Reed Riddle , Dani Atkinson , Jessica Schonhut , Justin Crepp

We analyze variations in the transit lightcurves of CoRoT-2b, a massive hot Jupiter orbiting a highly active G star. We use one transit lightcurve to eclipse-map a photospheric spot occulted by the planet. In this case study we determine…

Solar and Stellar Astrophysics · Physics 2015-05-13 U. Wolter , J. H. M. M. Schmitt , K. F. Huber , S. Czesla , H. M. Mueller , E. W. Guenther , A. P. Hatzes

Recently, 59 low-luminosity object transits were reported from the Optical Gravitational Lensing Experiment (OGLE). Our follow-up low-resolution spectroscopy of 16 candidates provided two objects, OGLE-TR-3 and OGLE-TR-10, which have…

Astrophysics · Physics 2009-11-07 S. Dreizler , P. Hauschildt , W. Kley , T. Rauch , S. L. Schuh , K. Werner , B. Wolff

Context. The CoRoT space mission routinely provides high-precision photometric measurements of thousands of stars that have been continuously observed for months. Aims. The discovery and characterization of the first very massive transiting…

Astrophysics · Physics 2009-11-13 M. Deleuil , H. J. Deeg , R. Alonso , F. Bouchy , D. Rouan