Transiting exoplanets from the CoRoT space mission XV. CoRoT-15b: a brown-dwarf transiting companion

Autoria(s): 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.; BORDE, P.; CSIZMADIA, Sz.; BONDT, K. De; DEEG, H. J.; DIAZ, 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.; HEBRARD, G.; JORDA, L.; LEGER, A.; LOVIS, C.; LLEBARIA, A.; LAMMER, H.; MACQUEEN, P. J.; MAZEH, T.; MOUTOU, C.; OFIR, A.; OLLIVIER, M.; PARVIAINEN, H.; PAETZOLD, M.; QUELOZ, D.; RAUER, H.; ROUAN, D.; SANTERNE, A.; SCHNEIDER, J.; TINGLEY, B.; WUCHTERL, G.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO
Data(s)

18/04/2012

18/04/2012

2011
Resumo

We report the discovery by the CoRoT space 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(-0.15)(+0.30) R(Jup) and a mass of 63.3 +/- 4.1 M(Jup), 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-type stars. 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.

Spanish Ministerio de Ciencia e Innovacion[ESP2007- 65480-C02-02]

Deutsches Zentrum fur Luft- und Raumfahrt, DLR[50OW0204]

Deutsches Zentrum fur Luft- und Raumfahrt, DLR[50OW0603]

Deutsches Zentrum fur Luft- und Raumfahrt, DLR[50QP07011]

Belgian Science Policy Office

STFC[ST/G002266]
Identificador

ASTRONOMY & ASTROPHYSICS, v.525, 2011

0004-6361

http://producao.usp.br/handle/BDPI/15636

10.1051/0004-6361/201015276

http://dx.doi.org/10.1051/0004-6361/201015276
Idioma(s)

eng
Publicador

EDP SCIENCES S A
Relação

Astronomy & Astrophysics
Direitos

closedAccess

Copyright EDP SCIENCES S A
Palavras-Chave #brown dwarfs #stars: low-mass #planetary systems #techniques: photometric #techniques: radial velocities #techniques: spectroscopic #EXTRASOLAR GIANT PLANETS #HYDROGEN-BURNING LIMIT #ECHELLE SPECTROMETER #CORALIE SURVEY #SOLAR PLANETS #RADIUS #STAR #MASS #PERIOD #EVOLUTION #Astronomy & Astrophysics
Tipo

article

original article

publishedVersion
Acesso ao item digital