Transiting Exoplanets From The CoRoT Space Mission XVII. The Hot Jupiter CoRoT-17B: A Very Old Planet

Csizmadia, S.
Moutou, C.
Deleuil, M.
Cabrera, J.
Fridlund, M.
Gandolfi, D.
Aigrain, S.
Alonso, R.
Almenara, J. M.
Auvergne, M.
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We report on the discovery of a hot Jupiter-type exoplanet, CoRoT-17b, detected by the CoRoT satellite. It has a mass of 2.43 +/- 0.30 M-Jup and a radius of 1.02 +/- 0.07 R-Jup, while its mean density is 2.82 +/- 0.38 g/cm(3). CoRoT-17b is in a circular orbit with a period of 3.7681 +/- 0.0003 days. The host star is an old (10.7 +/- 1.0 Gyr) main-sequence star, which makes it an intriguing object for planetary evolution studies. The planet's internal composition is not well constrained and can range from pure H/He to one that can contain similar to 380 earth masses of heavier elements.

Csizmadia, Sz, C. Moutou, M. Deleuil, J. Cabrera, M. Fridlund, D. Gandolfi, S. Aigrain et al. >Transiting exoplanets from the CoRoT space mission-XVII. The hot Jupiter CoRoT-17b: a very old planet.> Astronomy & Astrophysics, Vol. 531 (Jul., 2011): A41.