Journal
ASTRONOMY & ASTROPHYSICS
Volume 482, Issue 3, Pages L25-L28Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:200809433
Keywords
planetary systems; techniques : radial velocities
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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.
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