Article Dans Une Revue Astronomy & Astrophysics - A&A Année : 2008

Transiting exoplanets from the CoRoT space mission III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS

S. Aigrain
  • Fonction : Auteur
Pascal Bordé
P. Gondoin
  • Fonction : Auteur
L. Jorda
M. Ollivier
  • Fonction : Auteur
  • PersonId : 1673623
  • IdRef : 13322211X

Résumé

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.

Dates et versions

hal-00325064 , version 1 (26-09-2008)

Identifiants

Citer

F. Bouchy, D. Queloz, M. Deleuil, B. Loeillet, A. P. Hatzes, et al.. Transiting exoplanets from the CoRoT space mission III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS. Astronomy & Astrophysics - A&A, 2008, 482 (3), pp.L25-L28. ⟨10.1051/0004-6361:200809433⟩. ⟨hal-00325064⟩
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