Transiting exoplanets from the CoRoT space mission⋆

Authors :: Bouchy, F.
Deleuil, M.
Guillot, T.
Aigrain, S.
Carone, L.
Cochran, W. D.
Almenara, J. M.
Alonso, R.
Auvergne, M.
Baglin, A.
Barge, P.
Bonomo, A. S.
Bordé, P.
Csizmadia, Sz.
De Bondt, K.
Deeg, H. J.
Díaz, R. F.
Dvorak, R.
Endl, M.
Erikson, A.
Ferraz-Mello, S.
Fridlund, M.
Gandolfi, D.
Gazzano, J. C.
Gibson, N.
Gillon, M.
Guenther, E.
Hatzes, A.
Havel, M.
Hébrard, G.
Jorda, L.
Léger, A.
Lovis, C.
Llebaria, A.
Lammer, H.
MacQueen, P. J.
Mazeh, T.
Moutou, C.
Ofir, A.
Ollivier, M.
Parviainen, H.
Pätzold, M.
Queloz, D.
Rauer, H.
Rouan, D.
Santerne, A.
Schneider, J.
Tingley, B.
Wuchterl, G.
Source :: Astronomy and Astrophysics; January 2011, Vol. 525 Issue: 1
Publication Year :: 2011
Abstract: We report the discovery by the CoRoTspace mission of a transiting brown dwarf orbiting a F7V star with an orbital period of 3.06 days. CoRoT-15b has a radius of 1.12\hbox{$^{+0.30}_{-0.15}$}RJupand a mass of 63.3 ± 4.1 MJup, and is thus the second transiting companion lying in the theoretical mass domain of brown dwarfs. CoRoT-15b is either very young or inflated compared to standard evolution models, a situation similar to that of M-dwarf stars orbiting close to solar-typestars. Spectroscopic constraints and an analysis of the lightcurve imply a spin period in the range 2.9–3.1 days for the central star, which is compatible with a double-synchronisation of the system.