[en] We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring during the transit due to the Rossiter-McLaughlin (RM) effect, we determine the sky-projected angle between the stellar spin and the planetary orbital axis to be close to zero lambda = 7.2 ± 4.5 deg, and we secure the planetary nature of CoRoT-Exo-2b. We discuss the influence of the stellar activity on the RM modeling. Spectral analysis of the parent star from HARPS spectra are presented. Observations made with SOPHIE spectrograph at Observatoire de Haute Provence, France (PNP.07A.MOUT) and HARPS spectrograph at ESO La Silla Observatory (079.C-0127(F)). The CoRoT space mission, launched on December 27th 2006, has been developed and is operated by CNES, with the contribution of Austria, Belgium, Brasil, ESA, Germany, and Spain.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bouchy, F.; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France
Queloz, D.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Deleuil, M.; Laboratoire d'Astrophysique de Marseille, CNRS UMR 6110, Traverse du Siphon, 13376 Marseille, France
Loeillet, B.; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France ; Laboratoire d'Astrophysique de Marseille, CNRS UMR 6110, Traverse du Siphon, 13376 Marseille, France
Bordé, P.; Institut d'Astrophysique Spatiale, Université Paris XI, 91405 Orsay, France
Deeg, H. J.; Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain
de La Reza, R.; Observatório Nacional, Rio de Janeiro, RJ, Brazil
Dvorak, R.; Institute for Astronomy, University of Vienna, Türkenschanzstr. 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
Gondoin, P.; Research and Scientific Support Department, European Space Agency, ESTEC, 2200 Noordwijk, The Netherlands
Guillot, T.; Observatoire de la Côte d'Azur, Laboratoire Cassiopée, CNRS UMR 6202, BP 4229, 06304 Nice Cedex 4, France
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, CNRS UMR 6110, Traverse du Siphon, 13376 Marseille, France
Lammer, H.; Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria
Léger, A.; Institut d'Astrophysique Spatiale, Université Paris XI, 91405 Orsay, France
Llebaria, A.; Laboratoire d'Astrophysique de Marseille, CNRS UMR 6110, Traverse du Siphon, 13376 Marseille, France
Magain, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Mayor, M.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Moutou, C.; Laboratoire d'Astrophysique de Marseille, CNRS UMR 6110, Traverse du Siphon, 13376 Marseille, France
Ollivier, M.; Institut d'Astrophysique Spatiale, Université Paris XI, 91405 Orsay, France
Pätzold, M.; Institute for Geophysics and Meteorology, Köln University, Albertus-Magnus-Platz, 50923 Cologne, Germany
Pepe, F.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Pont, F.; 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
Rouan, D.; LESIA, CNRS UMR 8109, Observatoire de Paris, 5 place J. Janssen, 92195 Meudon Cedex, France
Schneider, J.
Triaud, A H M J; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Udry, S.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
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