stars: fundamental parameters; techniques: photometric; techniques: radial velocities; techniques: spectroscopic
Abstract :
[en] Context. The space telescope CoRoT searches for transiting extrasolar planets by continuously monitoring the optical flux of thousands of stars in several fields of view. <BR /> Aims: We report the discovery of CoRoT-10b, a giant planet on a highly eccentric orbit (e = 0.53 ± 0.04) revolving in 13.24 days around a faint (V = 15.22) metal-rich K1V star. <BR /> Methods: We used CoRoT photometry, radial velocity observations taken with the HARPS spectrograph, and UVES spectra of the parent star to derive the orbital, stellar, and planetary parameters. <BR /> Results: We derive a radius of the planet of 0.97 ± 0.07 R[SUB]Jup[/SUB] and a mass of 2.75 ± 0.16 M[SUB]Jup[/SUB]. The bulk density, ρ[SUB]p[/SUB] = 3.70 ± 0.83 g cm[SUP]-3[/SUP], is ~2.8 that of Jupiter. The core of CoRoT-10b could contain up to 240 M_⊕ of heavy elements. Moving along its eccentric orbit, the planet experiences a 10.6-fold variation in insolation. Owing to the long circularisation time, τ[SUB]circ[/SUB] > 7 Gyr, a resonant perturber is not required to excite and maintain the high eccentricity of CoRoT-10b. The CoRoT space mission, launched on December 27th 2006, has been developed and is operated by CNES, with the contribution of Austria, Belgium, Brazil, ESA (RSSD and Science Programme), Germany and Spain.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
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Alonso, R.; Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
Gazzano, J*-C; Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France ; Observatoire de la Côte d' Azur, Laboratoire Cassiopée, BP 4229, 06304 Nice Cedex 4, France
Havel, M.; Observatoire de la Côte d' Azur, Laboratoire Cassiopée, BP 4229, 06304 Nice Cedex 4, France
Aigrain, S.; Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK
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Baglin, A.; LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195 Meudon, France
Barbieri, M.; Dipartimento di Astronomia, Università di Padova, 35122 Padova, Italy
Barge, P.; Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
Bouchy, F.; Observatoire de Haute-Provence, Université Aix-Marseille & CNRS, 04870 St. Michel l'Observatoire, France ; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France
Bruntt, H.; LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195 Meudon, France
Cabrera, J.; Institute of Planetary Research, German Aerospace Centre, Rutherfordstrasse 2, 12489 Berlin, Germany ; LUTH, Observatoire de Paris, CNRS, Université Paris Diderot ; 5 place Jules Janssen, 92195 Meudon, France
Cameron, A. C.; SUPA, School of Physics and Astronomy, University of St Andrews, Fife KY16 9SS
Carone, L.; Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany
Carpano, S.; Research and ScientiPc Support Department, ESTEC/ESA, PO Box 299, 2200 AG Noordwijk, The Netherlands
Csizmadia, Szilard; Institute of Planetary Research, German Aerospace Centre, Rutherfordstrasse 2, 12489 Berlin, Germany
Deleuil, M.; Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
Deeg, H. J.; Instituto de Astrofõsica de Canarias, 38205 La Laguna, Tenerife, Spain
Dvorak, R.; University of Vienna, Institute of Astronomy, Türkenschanzstr. 17, 1180 Vienna, Austria
Erikson, A.; Institute of Planetary Research, German Aerospace Centre, Rutherfordstrasse 2, 12489 Berlin, Germany
Ferraz-Mello, S.; IAG, University of Sao Paulo, Brazil
Fridlund, M.; Research and ScientiPc Support Department, ESTEC/ESA, PO Box 299, 2200 AG Noordwijk, The Netherlands
Gandolfi, D.; Research and ScientiPc Support Department, ESTEC/ESA, PO Box 299, 2200 AG Noordwijk, The Netherlands ; Thüringer Landessternwarte, Sternwarte 5, Tautenburg 5, 07778 Tautenburg, Germany
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Llebaria, A.; Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
Mayor, M.; Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
Mazeh, T.; School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
Moutou, C.; Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
Ollivier, M.; Institut d'Astrophysique Spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405 Orsay, France
Pätzold, M.; Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany
Pepe, F.; Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
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Rouan, D.; LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195 Meudon, France
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