A transiting giant planet with a temperature between 250 K and 430 K

Deeg, H. J. and Moutou, C. and Erikson, A. and Csizmadia, Sz. and Tingley, B. and Barge, P. and Bruntt, H. and Havel, M. and Aigrain, S. and Almenara, J. M. and Alonso, R. and Auvergne, M. and Baglin, A. and Barbieri, M. and Benz, W. and Bonomo, A. S. and Bordé, P. and Bouchy, F. and Cabrera, J. and Carone, L. and Carpano, S. and Ciardi, D. and Deleuil, M. and Dvorak, R. and Ferraz-Mello, S. and Fridlund, M. and Gandolfi, D. and Gazzano, J.-C. and Gillon, M. and Gondoin, P. and Guenther, E. and Guillot, T. and den-Hartog, R. and Hatzes, A. and Hidas, M. and Hébrard, G. and Jorda, L. and Kabath, P. and Lammer, H. and Léger, A. and Lister, T. and Llebaria, A. and Lovis, C. and Mayor, M. and Mazeh, T. and Ollivier, M. and Pätzold, M. and Pepe, F. and Pont, F. and Queloz, D. and Rabus, M. and Rauer, H. and Rouan, D. and Samuel, B. and Schneider, J. and Shporer, A. and Stecklum, B. and Street, R. and Udry, S. and Weingrill, J. and Wuchterl, G. (2010) A transiting giant planet with a temperature between 250 K and 430 K. Nature, 454 (7287). pp. 384-387. ISSN 0028-0836 http://resolver.caltech.edu/CaltechAUTHORS:20100405-153453788

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Abstract

Of the over 400 known^1 exoplanets, there are about 70 planets that transit their central star, a situation that permits the derivation of their basic parameters and facilitates investigations of their atmospheres. Some short-period planets^2, including the first terrestrial exoplanet^(3,4) (CoRoT-7b), have been discovered using a space mission^5 designed to find smaller and more distant planets than can be seen from the ground. Here we report transit observations of CoRoT-9b, which orbits with a period of 95.274 days on a low eccentricity of 0.11 ± 0.04 around a solar-like star. Its periastron distance of 0.36 astronomical units is by far the largest of all transiting planets, yielding a ‘temperate’ photospheric temperature estimated to be between 250 and 430 K. Unlike previously known transiting planets, the present size of CoRoT-9b should not have been affected by tidal heat dissipation processes. Indeed, the planet is found to be well described by standard evolutionmodels^6 with an inferred interior composition consistent with that of Jupiter and Saturn.

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Article

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© 2010 Nature Publishing. Received 30 November 2009; accepted 19 January 2010. The CoRoT space mission has been developed and is operated by CNES, with the contributions of Austria, Belgium, Brazil, ESA, Germany and Spain. CoRoT data are available to the public from the CoRoT archive: http://idoc-corot.ias.u-psud.fr. The team at IAC acknowledges support by grant ESP2007-65480-C02-02 of the Spanish Ministerio de Ciencia e Innovación. The German CoRoT Team (TLS and Univ. Cologne) acknowledges DLR grants 50OW0204, 50OW0603 and 50QP07011. Observations with the HARPS spectrograph were performed under the ESO programme ID 082.C-0120, and observations with the VLT/UVES under ID 081.C-0413(C).

Funders:

Funding Agency	Grant Number
Spanish Ministerio de Ciencia e Innovaciόn	ESP2007-65480-C02-02
Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center)	50OW0204
Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center)	50OW0603
Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center)	50QP07011

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CaltechAUTHORS:20100405-153453788

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Official Citation:

Deeg, H. J., C. Moutou, et al. (2010). "A transiting giant planet with a temperature between 250[thinsp]K and 430[thinsp]K." Nature 464(7287): 384-387. doi:10.1038/nature08856

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17858

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CaltechAUTHORS

Deposited By:

Ruth Sustaita

Deposited On:

14 May 2010 17:53

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26 Dec 2012 11:56

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