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

François Bouchy
Claire Moutou

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-03742272 , version 1 (02-08-2022)

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François Bouchy, Didier Queloz, Magali Deleuil, B. Loeillet, Artie 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 (Issue 3), pp.L25-L28. ⟨10.1051/0004-6361:200809433⟩. ⟨hal-03742272⟩
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