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Title:
Transiting exoplanets from the CoRoT space mission. XXII. CoRoT-16b: a hot Jupiter with a hint of eccentricity around a faint solar-like star
Authors:
Ollivier, M.; Gillon, M.; Santerne, A.; Wuchterl, G.; Havel, M.; Bruntt, H.; Bordé, P.; Pasternacki, T.; Endl, M.; Gandolfi, D.; Aigrain, S.; Almenara, J. M.; Alonso, R.; Auvergne, M.; Baglin, A.; Barge, P.; Bonomo, A. S.; Bouchy, F.; Cabrera, J.; Carone, L.; Carpano, S.; Cavarroc, C.; Cochran, W. D.; Csizmadia, Sz.; Deeg, H. J.; Deleuil, M.; Diaz, R. F.; Dvorak, R.; Erikson, A.; Ferraz-Mello, S.; Fridlund, M.; Gazzano, J.-C.; Grziwa, S.; Guenther, E.; Guillot, T.; Guterman, P.; Hatzes, A.; Hébrard, G.; Lammer, H.; Léger, A.; Lovis, C.; MacQueen, P. J.; Mayor, M.; Mazeh, T.; Moutou, C.; Ofir, A.; Pätzold, M.; Queloz, D.; Rauer, H.; Rouan, D.; Samuel, B.; Schneider, J.; Tadeu dos Santos, M.; Tal-Or, L.; Tingley, B.; Weingrill, J.
Affiliation:
AA(Institut d'astrophysique spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405, Orsay, France ), AB(IAG, Université de Liège, Allée du 6 août 17, Liège 1, Belgium), AC(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), AD(Thüringer Landessternwarte, 07778, Tautenburg, Germany), AE(Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France), AF(Department of Physics and AstronomyAarhus University, 8000, Aarhus C, Denmark), AG(Institut d'astrophysique spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405, Orsay, France), AH(Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany), AI(McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA), AJ(Thüringer Landessternwarte, 07778, Tautenburg, Germany; Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands), AK(Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK), AL(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France; Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain), AM(Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland), AN(LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France), AO(LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France), AP(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), AQ(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), AR(Institut d'astrophysique de Paris, Université Paris 6 & CNRS (UMR 7095), 98 bd Arago, 75014, Paris, France; Observatoire de Haute-Provence, CNRS & OAMP, 04870 St-Michel l', Observatoire, France), AS(Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany), AT(Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany), AU(Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands), AV(Institut d'astrophysique spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405, Orsay, France), AW(McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA), AX(Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany), AY(Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain), AZ(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), BA(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), BB(Institute for Astronomy, University of Vienna, Türkenschanzstrasse 17, 1180, Vienna, Austria), BC(Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany), BD(Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Brasil), BE(Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands), BF(Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France), BG(Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany), BH(Thüringer Landessternwarte, 07778, Tautenburg, Germany), BI(Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France), BJ(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), BK(Thüringer Landessternwarte, 07778, Tautenburg, Germany), BL(Institut d'astrophysique de Paris, Université Paris 6 & CNRS (UMR 7095), 98 bd Arago, 75014, Paris, France), BM(Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, Graz, Austria), BN(Institut d'astrophysique spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405, Orsay, France), BO(Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland), BP(McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA), BQ(Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland), BR(Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel), BS(Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France), BT(Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel), BU(Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany), BV(Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland), BW(Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany; Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany), BX(LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France), BY(LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France; Institut d'astrophysique spatiale, Université Paris-Sud 11 & CNRS (UMR 8617), Bât. 121, 91405, Orsay, France), BZ(Laboratoire de l'univers et de ses théories, Observatoire de Paris & CNRS (UMR 8102), 5 place Jules Janssen, 92195, Meudon, France), CA(Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Brasil), CB(Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel), CC(Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain), CD(Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, Graz, Austria)
Publication:
Astronomy & Astrophysics, Volume 541, id.A149, 10 pp. (A&A Homepage)
Publication Date:
05/2012
Origin:
EDP Sciences
Astronomy Keywords:
stars: fundamental parameters, techniques: photometric, techniques: spectroscopic, techniques: radial velocities, planetary systems
DOI:
10.1051/0004-6361/201117460
Bibliographic Code:
2012A&A...541A.149O

Abstract


Aims: We report the discovery of CoRoT-16b, a low density hot jupiter that orbits a faint G5V star (mV = 15.63) in 5.3523 ± 0.0002 days with slight eccentricity. A fit of the data with no a priori assumptions on the orbit leads to an eccentricity of 0.33 ± 0.1. We discuss this value and also derive the mass and radius of the planet.
Methods: We analyse the photometric transit curve of CoRoT-16 given by the CoRoT satellite, and radial velocity data from the HARPS and HIRES spectrometers. A combined analysis using a Markov chain Monte Carlo algorithm is used to get the system parameters.
Results: CoRoT-16b is a 0.535 -0.083/+0.085 MJ, 1.17 -0.14/+0.16 RJ hot Jupiter with a density of 0.44 -0.14/+0.21 g cm-3. Despite its short orbital distance (0.0618 ± 0.0015 AU) and the age of the parent star (6.73 ± 2.8 Gyr), the planet orbit exhibits significantly non-zero eccentricity. This is very uncommon for this type of objects as tidal effects tend to circularise the orbit. This value is discussed taking into account the characteristics of the star and the observation accuracy.

The CoRoT space mission, launched on December 27, 2006, has been developed and is operated by the CNES with the contribution of Austria, Belgium, Brasil, ESA, Germany, and Spain.Observations made with the HARPS spectrograph at ESO La Silla Observatory (HARPS programs 083.C-0186 and 184.C-0639) and the HIRES spectrograph at the Keck Observatory (NASA-Keck programs N035Hr, N143Hr and N095Hr).

Associated Articles

Part  2     Part  3     Part  4     Part  5     Part  6     Part  7     Part  8     Part  9     Part 10     Part 11     Part 12     Part 13     Part 14     Part 15     Part 16     Part 17     Part 18     Part 19     Part 20     Part 22     Part 21     Part 23     Part 24     Part 25     Part 26     Part  1    

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