Reference : Transiting exoplanets from the CoRoT space mission . VI. CoRoT-Exo-3b: the first secu...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/27332
Transiting exoplanets from the CoRoT space mission . VI. CoRoT-Exo-3b: the first secure inhabitant of the brown-dwarf desert
English
Deleuil, M. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Deeg, H. J. [Instituto de Astrofísica de Canarias, C. via Lactea S/N, 38200 La Laguna, Spain]
Alonso, R. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Bouchy, F. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Rouan, D. [LESIA, CNRS UMR 8109, Observatoire de Paris, 5 place J. Janssen, 92195 Meudon, France]
Auvergne, M. [LESIA, CNRS UMR 8109, Observatoire de Paris, 5 place J. Janssen, 92195 Meudon, France]
Baglin, A. [LESIA, CNRS UMR 8109, Observatoire de Paris, 5 place J. Janssen, 92195 Meudon, France]
Aigrain, S. [School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK]
Almenara, J. M. [Instituto de Astrofísica de Canarias, C. via Lactea S/N, 38200 La Laguna, Spain]
Barbieri, M. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Barge, P. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Bruntt, H. [School of Physics A28, University of Sydney, Australia]
Bordé, P. [IAS, Université Paris XI, 91405 Orsay, France]
Collier Cameron, A. [School of Physics and Astronomy, University of St Andrews, UK]
Csizmadia, Szilard [Institute of Planetary Research, DLR, Rutherfordstr. 2, 12489 Berlin, Germany]
de La Reza, R. [Observatório Nacional, Rio de Janeiro, RJ, Brazil]
Dvorak, R. [Institute for Astronomy, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria]
Erikson, A. [Institute of Planetary Research, DLR, Rutherfordstr. 2, 12489 Berlin, Germany]
Fridlund, M. [Research and Scientific Support Department, European Space Agency, ESTEC, 2200 Noordwijk, The Netherlands]
Gandolfi, D. [Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Guenther, E. [Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany]
Guillot, T. [Observatoire de la Côte d'Azur, Laboratoire Cassiopée, CNRS UMR 6202, BP 4229, 06304 Nice Cedex 4, France]
Hatzes, A. [Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany]
Hébrard, G. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Jorda, L. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Lammer, H. [Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria]
Léger, A. [IAS, Université Paris XI, 91405 Orsay, France]
Llebaria, A. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Loeillet, B. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Mayor, M. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Mazeh, T. [School of Physics and Astronomy, R. and B. Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel]
Moutou, C. [Laboratoire d'Astrophysique de Marseille (UMR 6110), Technopole de Marseille-Étoile, 13388 Marseille Cedex 13, France]
Ollivier, M. [IAS, Université Paris XI, 91405 Orsay, France]
Pätzold, M. [Rheinisches Institut für Umweltforschung, Universität zu Köln, Abt. Planetenforschung, Aachener Str. 209, 50931 Köln, Germany]
Pont, F. [School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK]
Queloz, D. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Rauer, H. [Institute of Planetary Research, DLR, Rutherfordstr. 2, 12489 Berlin, Germany ; Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, 10623 Berlin, Germany]
Schneider, J. [LUTH, Observatoire de Paris-Meudon, 5 place J. Janssen, 92195 Meudon, France]
Shporer, A. [School of Physics and Astronomy, R. and B. Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel]
Wuchterl, G. [Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany]
Zucker, S. [School of Physics and Astronomy, R. and B. Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel]
1-Dec-2008
Astronomy and Astrophysics
EDP Sciences
491
889-897
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: planetary systems ; stars: low-mass ; brown-dwarfs ; Sun: fundamental parameters
[en] 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 from May 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 R_Jup and transits around its F3-type primary every 4.26 days in a synchronous orbit. Its mass of 21.66 ± 1.0 M_Jup, density of 26.4 ± 5.6 g cm[SUP]-3[/SUP], and surface gravity of logg = 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 M_Jup) are found preferentially around more massive stars than the Sun. The CoRoT space mission, launched on December 27th 2006, has been developed and is operating by CNES, with the contribution of Austria, Belgium, Brasil, ESA, Germany and Spain. The first CoRoT data will be available to the public in February 2009 from the CoRoT archive: http://idoc-corot.ias.u-psud.fr/ Table of the COROT photometry is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/491/889
http://hdl.handle.net/2268/27332
10.1051/0004-6361:200810625
http://adsabs.harvard.edu/abs/2008A%26A...491..889D
http://de.arxiv.org/abs/0810.0919

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