Pasternacki, T[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Endl, M[McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA]
Gandolfi, D[Thüringer Landessternwarte, 07778, Tautenburg, Germany; Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands]
Aigrain, S[Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK]
Almenara, J M[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]
Alonso, R[Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland]
Auvergne, M[LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France]
Baglin, A[LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France]
Barge, P[Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France]
Bonomo, A S[Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France]
Bouchy, F[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]
Cabrera, J[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Carone, L[Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany]
Carpano, S[Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands]
Cochran, W D[McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA]
Csizmadia, Sz[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Deeg, H J[Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain]
Deleuil, M[Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France]
Diaz, R F[Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France]
Dvorak, R[Institute for Astronomy, University of Vienna, Türkenschanzstrasse 17, 1180, Vienna, Austria]
Erikson, A[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Ferraz-Mello, S[Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Brasil]
Fridlund, M[Research and Scientific Support Department, European Space Agency, Keplerlaan, 2200 AG, Noordwijk, The Netherlands]
Gazzano, J*-C[Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France]
Grziwa, S[Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany]
Lovis, C[Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland]
MacQueen, P J[McDonald Observatory, University of Texas at Austin, Austin, 78712, TX, USA]
Mayor, M[Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland]
Mazeh, T[Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel]
Moutou, C[Laboratoire d'Astrophysique de Marseille - LAM, Université d'Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388, Marseille Cedex 13, France]
Ofir, A[Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel]
Pätzold, M[Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Str. 209, 50931, Köln, Germany]
Queloz, D[Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland]
Rauer, H[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany; Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany]
Rouan, D[LESIA, UMR 8109 CNRS, Observatoire de Paris, UVSQ, Université Paris-Diderot, 5 place J. Janssen, 92195, Meudon, France]
Samuel, B[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]
Schneider, J[Laboratoire de l'univers et de ses théories, Observatoire de Paris & CNRS (UMR 8102), 5 place Jules Janssen, 92195, Meudon, France]
Tadeu dos Santos, M[Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Brasil]
Tal-Or, L[Wise Observatory, Tel AvivUniversity, 69978, Tel Aviv, Israel]
Tingley, B[Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain]
Weingrill, J[Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, Graz, Austria]
[en] stars: fundamental parameters ; techniques: photometric ; techniques: spectroscopic ; techniques: radial velocities ; planetary systems
[en] <BR /> 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. <BR /> 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. <BR /> Results: CoRoT-16b is a 0.535 -0.083/+0.085 M[SUB]J[/SUB], 1.17 -0.14/+0.16 R[SUB]J[/SUB] hot Jupiter with a density of 0.44 -0.14/+0.21 g cm[SUP]-3[/SUP]. 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).
[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
