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VLT transit and occultation photometry for the bloated planet CoRoT-1b

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 02 Jul 2009Embargo end date: 01 Jan 2009Publisher:EDP SciencesJournal:Astronomy & Astrophysics, volume 506, pages 359-367 (issn: 0004-6361, eissn: 1432-0746,

Authors: Travis S. Barman; Pierre Magain; Amaury H. M. J. Triaud; Brice-Olivier Demory; Pierre F. L. Maxted; Didier Queloz; Josefina Montalbán; +4 Authors

doi: 10.1051/0004-6361/200912231 , 10.48550/arxiv.0905.4571 , 10.48350/153336

arXiv: http://arxiv.org/abs/0905.4571

VLT transit and occultation photometry for the bloated planet CoRoT-1b

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Abstract

We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 microns. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07 (+0.13,-0.18) M_Jup and 1.45 (+0.07,-0.13) R_Jup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 microns (0.278 (+0.043,-0.066) %) is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.

Accepted for publication in Astronomy and Astrophysics

Related Organizations

University of Liège
Belgium
University of Geneva
Switzerland
University of St Andrews
United Kingdom
Lowell Observatory
United States
Laboratoire d’Astrophysique de Marseille
France

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Keywords

Earth and Planetary Astrophysics (astro-ph.EP), FOS: Physical sciences, Astrophysics - Earth and Planetary Astrophysics

1 Research products, page 1 of 1

FORS2 and HAWKI photometry of CoRoT-1
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