Transiting exoplanets from the CoRoT space mission. V. CoRoT-Exo-4b: stellar and planetary parameters

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Transiting exoplanets from the CoRoT space mission. V. CoRoT-Exo-4b: stellar and planetary parameters

Please use this identifier to cite or link to this item: http://hdl.handle.net/10036/87544

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Title: Transiting exoplanets from the CoRoT space mission. V. CoRoT-Exo-4b: stellar and planetary parameters
Author: Moutou, C.
Bruntt, H.
Guillot, T.
Shporer, A.
Guenther, E. W.
Aigrain, Suzanne
Almenara, J.-M.
Alonso, R.
Auvergne, M.
Baglin, A.
Barbieri, M.
Barge, P.
Benz, W.
Bordé, P.
Bouchy, F.
Deeg, H. J.
De la Reza, R.
Deleuil, M.
Dvorak, R.
Erikson, A.
Fridlund, M.
Gillon, M.
Gondoin, P.
Hatzes, A.
Hébrard, G.
Jorda, L.
Kabath, P.
Lammer, H.
Léger, A.
Llebaria, A.
Loeillet, B.
Magain, P.
Mayor, M.
Mazeh, T.
Ollivier, M.
Pätzold, M.
Pepe, F.
Pont, F.
Queloz, D.
Rabus, M.
Rauer, H.
Rouan, D.
Schneider, J.
Udry, S.
Wuchterl, G.
Citation: 488 (2), pp. L47-L50
Publisher: EDP Sciences
Journal: Astronomy and Astrophysics
Date Issued: 2008
URI: http://hdl.handle.net/10036/87544
DOI: 10.1051/0004-6361:200810273
Links: http://dx.doi.org/10.1051/0004-6361:200810273
Abstract: Aims. The CoRoT satellite has announced its fourth transiting planet (Aigrain et al. 2008, A&A, 488, L43) with space photometry. We describe and analyse complementary observations of this system performed to establish the planetary nature of the transiting body and to estimate the fundamental parameters of the planet and its parent star. Methods. We have analysed high precision radial-velocity data, ground-based photometry, and high signal-to-noise ratio spectroscopy. Results. The parent star CoRoT-Exo-4 (2MASS 06484671-0040219) is a late F-type star of mass of 1.16 MΘ and radius of 1.17 RΘ. The planet has a circular orbit with a period of 9.20205 d. The planet radius is 1.19 RJup and the mass is 0.72 MJup. It is a gas-giant planet with a “normal” internal structure of mainly H and He. CoRoT-Exo-4b has the second longest period of the known transiting planets. It is an important discovery since it occupies an empty area in the mass-period diagram of transiting exoplanets.
Type: Article
Description: Copyright © The European Southern Observatory (ESO)
Keywords: planetary systemsphotometric techniquesradial velocities techniquesstars: fundamental parameters
ISSN: 0004-63611432-0746


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