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CoRoT sounds the stars: p-mode parameters of Sun-like oscillations on HD 49933

Auvergne, M.; Baudin, F.; Jiménez-Reyes, S. J. +19 more

Context: The first asteroseismology results from CoRoT are presented, on a star showing Sun-like oscillations. We have analyzed a 60 day lightcurve of high-quality photometric data collected by CoRoT on the F5 V star HD 49933. The data reveal a rich spectrum of overtones of low-degree p modes.
Aims: Our aim was to extract robust estimates of t…

Transiting exoplanets from the CoRoT space mission. II. CoRoT-Exo-2b: a transiting planet around an active G star

Mazeh, T.; Aigrain, S.; Alonso, R. +40 more

Context: The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data identifies the most promising candidates and triggers the ground-based follow-up.
Aims: We report on the discovery of the transiting planet CoRoT…

Transiting exoplanets from the CoRoT space mission . VI. CoRoT-Exo-3b: the first secure inhabitant of the brown-dwarf desert

Mazeh, T.; Aigrain, S.; Zucker, S. +39 more

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 planetary companion with a short orbital period is reported.
Methods: A series of 34 transits was de…

Transiting exoplanets from the CoRoT space mission. IV. CoRoT-Exo-4b: a transiting planet in a 9.2 day synchronous orbit

Mazeh, T.; Aigrain, S.; Zucker, S. +32 more

CoRoT, the first space-based transit search, provides ultra-high-precision light curves with continuous time-sampling over periods of up to 5 months. This allows the detection of transiting planets with relatively long periods, and the simultaneous study of the host star's photometric variability. In this Letter, we report the discovery of the tra…

Transiting exoplanets from the CoRoT space mission. V. CoRoT-Exo-4b: stellar and planetary parameters

Mazeh, T.; Aigrain, S.; Alonso, R. +42 more

Aims: The CoRoT satellite has announced its fourth transiting planet (Aigrain et al. 2008, A&A, 488, L43) with space photometry. We describe and analyse complementary observations of this system performed to establish the planetary nature of the transiting body and to estimate the fundamental parameters of the planet and its parent star.
M…

Correcting for background changes in CoRoT exoplanet data

Auvergne, M.; Costa, J. E. S.; Samadi, R. +4 more

Context: The CoRoT satellite is a highly accurate photometer with 2 channels respectively optimised for asteroseismology and exoplanet finding. The design includes an effective straylight rejection system, however residual straylight reaches the detectors.
Aims: We test four different background models in order to apply the best possible backg…