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

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

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 betwee...

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Détails bibliographiques
Auteurs principaux: Bouchy, F, Queloz, D, Deleuil, M, Loeillet, B, Hatzes, A, Aigrain, S, Alonso, R, Auvergne, M, Baglin, A, Barge, P, Benz, W, Borde, P, Deeg, H, De la Reza, R, Dvorak, R, Erikson, A, Fridlund, M, Gondoin, P, Guillot, T, Hebrard, G, Jorda, L, Lammer, H, Leger, A, Llebaria, A, Magain, P
Format: Journal article
Langue:English
Publié: 2008
Description
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 = 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. © 2008 ESO.

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