Volume 531, July 2011
|Number of page(s)||8|
|Section||Planets and planetary systems|
|Published online||07 June 2011|
Transiting exoplanets from the CoRoT space mission⋆
XVII. The hot Jupiter CoRoT-17b: a very old planet
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany
2 Laboratoire d’Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
3 LUTH, Observatoire de Paris, UMR 8102 CNRS, Université Paris Diderot, 5 place Jules Janssen, 92195 Meudon, France
4 Research and Scientific Support Department, ESTEC/ESA, PO Box 299, 2200 AG Noordwijk, The Netherlands
5 Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK
6 Observatoire de l’Université de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
7 LESIA, UMR 8109 CNRS, Observatoire de Paris, UPMC, Université Paris-Diderot, 5 place J. Janssen, 92195 Meudon, France
8 Institut d’Astrophysique Spatiale, Université Paris XI, 91405 Orsay, France
9 McDonald Observatory, University of Texas at Austin, Austin, 78712 TX, USA
10 Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain
11 Universidad de La Laguna, Dept. de Astrofísica, 38200 La Laguna, Tenerife, Spain
12 Observatoire de Haute Provence, 04670 Saint Michel l’ Observatoire, France
13 Institut d’Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France
14 Rheinisches Institut für Umweltforschung an derUniversität zu Köln, Aachener Strasse 209, 50931, Germany
15 University of Vienna, Institute of Astronomy, Türkenschanzstr. 17, 1180 Vienna, Austria
16 IAG-Universidade de Sao Paulo, Brasil
17 Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d’Azur, BP 4229, 06304 Nice Cedex 4, France
18 University of Liège, Allée du 6 août 17, Sart Tilman, Liège 1, Belgium
19 Thüringer Landessternwarte, Sternwarte 5, Tautenburg 5, 07778 Tautenburg, Germany
20 Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042 Graz, Austria
21 School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
22 Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
Received: 3 April 2011
Accepted: 27 April 2011
We report on the discovery of a hot Jupiter-type exoplanet, CoRoT-17b, detected by the CoRoT satellite. It has a mass of 2.43 ± 0.30 MJup and a radius of 1.02 ± 0.07 RJup, while its mean density is 2.82 ± 0.38 g/cm3. CoRoT-17b is in a circular orbit with a period of 3.7681 ± 0.0003 days. The host star is an old (10.7 ± 1.0 Gyr) main-sequence star, which makes it an intriguing object for planetary evolution studies. The planet’s internal composition is not well constrained and can range from pure H/He to one that can contain ~380 earth masses of heavier elements.
Key words: techniques: photometric / techniques: radial velocities / techniques: spectroscopic / planetary systems
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. Part of the observations were obtained at the Canada-France-Hawaii Telescope (CFHT) which is operated by the National Research Council of Canada, the Institut National des Sciences de l’Univers of the Centre National de la Recherche Scientifique of France, and the University of Hawaii. Based on observations made with HARPS spectrograph on the 3.6-m European Organisation for Astronomical Research in the Southern Hemisphere telescope at La Silla Observatory, Chile (ESO program 184.C-0639). Based on observations made with the IAC80 telescope operated on the island of Tenerife by the Instituto de Astrofísica de Canarias in the Spanish Observatorio del Teide. Part of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation.
© ESO, 2011
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