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

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

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dc.contributor.author Deleuil, M. en_GB
dc.contributor.author Deeg, H. J. en_GB
dc.contributor.author Alonso, R. en_GB
dc.contributor.author Bouchy, F. en_GB
dc.contributor.author Rouan, D. en_GB
dc.contributor.author Auvergne, M. en_GB
dc.contributor.author Baglin, A. en_GB
dc.contributor.author Aigrain, Suzanne en_GB
dc.contributor.author Almenara, J.-M. en_GB
dc.contributor.author Barbieri, M. en_GB
dc.contributor.author Barge, P. en_GB
dc.contributor.author Bruntt, H. en_GB
dc.contributor.author Bordé, P. en_GB
dc.contributor.author Collier Cameron, A. en_GB
dc.contributor.author Csizmadia, Sz. en_GB
dc.contributor.author De la Reza, R. en_GB
dc.contributor.author Dvorak, R. en_GB
dc.contributor.author Erikson, A. en_GB
dc.contributor.author Fridlund, M. en_GB
dc.contributor.author Gandolfi, D. en_GB
dc.contributor.author Gillon, M. en_GB
dc.contributor.author Guenther, E. W. en_GB
dc.contributor.author Guillot, T. en_GB
dc.contributor.author Hatzes, A. en_GB
dc.contributor.author Hébrard, G. en_GB
dc.contributor.author Jorda, L. en_GB
dc.contributor.author Lammer, H. en_GB
dc.contributor.author Léger, A. en_GB
dc.contributor.author Llebaria, A. en_GB
dc.contributor.author Loeillet, B. en_GB
dc.contributor.author Mayor, M. en_GB
dc.contributor.author Mazeh, T. en_GB
dc.contributor.author Moutou, C. en_GB
dc.contributor.author Ollivier, M. en_GB
dc.contributor.author Pätzold, M. en_GB
dc.contributor.author Pont, F. en_GB
dc.contributor.author Queloz, D. en_GB
dc.contributor.author Rauer, H. en_GB
dc.contributor.author Schneider, J. en_GB
dc.contributor.author Shporer, A. en_GB
dc.contributor.author Wuchterl, G. en_GB
dc.contributor.author Zucker, S. en_GB
dc.date.accessioned 2009-12-08T14:51:43Z en_GB
dc.date.accessioned 2011-01-25T11:53:41Z en_US
dc.date.accessioned 2013-03-20T13:15:09Z
dc.date.issued 2008 en_GB
dc.description.abstract 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 detected in the CoRoT light curve of an F3V star, observed fromMay to October 2007 for 152 days. The radius was accurately determined and the mass derived for this new transiting, thanks to the combined analysis of the light curve and complementary ground-based observations: high-precision radial-velocity measurements, on-off photometry, and high signal-to-noise spectroscopic observations. Results. CoRoT-Exo-3b has a radius of 1.01 ± 0.07 RJup and transits around its F3-type primary every 4.26 days in a synchronous orbit. Its mass of 21.66 ± 1.0 MJup, density of 26.4 ±5.6 g cm−3, and surface gravity of log g = 4.72 clearly distinguish it from the regular close-in planet population, making it the most intriguing transiting substellar object discovered so far. Conclusions. With the current data, the nature of CoRoT-Exo-3b is ambiguous, as it could either be a low-mass brown-dwarf or a member of a new class of “superplanets”. Its discovery may help constrain the evolution of close-in planets and brown-dwarfs better. Finally, CoRoT-Exo-3b confirms the trend that massive transiting giant planets (M ≥ 4 MJup) are found preferentially around more massive stars than the Sun. en_GB
dc.identifier.citation 491 (3), pp. 889-897 en_GB
dc.identifier.doi 10.1051/0004-6361:200810625 en_GB
dc.identifier.uri http://hdl.handle.net/10036/87543 en_GB
dc.language.iso en en_GB
dc.publisher EDP Sciences en_GB
dc.relation.url http://dx.doi.org/10.1051/0004-6361:200810625 en_GB
dc.subject planetary systems en_GB
dc.subject stars: low-mass, brown-dwarfs en_GB
dc.subject sun: fundamental parameters en_GB
dc.title Transiting exoplanets from the CoRoT space mission. VI. CoRoT-Exo-3b: the first secure inhabitant of the brown-dwarf desert en_GB
dc.type Article en_GB
dc.date.available 2009-12-08T14:51:43Z en_GB
dc.date.available 2011-01-25T11:53:41Z en_US
dc.date.available 2013-03-20T13:15:09Z
dc.identifier.issn 0004-6361 en_GB
dc.identifier.issn 1432-0746 en_GB
dc.description Copyright © The European Southern Observatory (ESO) en_GB
dc.identifier.journal Astronomy and Astrophysics en_GB


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