Transiting exoplanets from the CoRoT space mission. XVII. The hot Jupiter CoRoT-17b: a very old planet

SZ. CSIZMADIA; C. MOUTOU; M. DELEUIL; J. CABRERA; M. FRIDLUND; D. GANDOLFI; S. AIGRAIN; R. ALONSO; J. M. ALMENARA; M. AUVERGNE; A. BAGLIN; P. BARGE; A. S. BONOMO; P. BORDÉ; F. BOUCHY; H. BRUNNTT; L. CARONE; S. CARPANO; C. CAVARROC; W. D. COCHRAN; H. J. DEEG; R. F. DÍAZ; AND 30 COAUTHORS

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Lugar: Paris; Año: 2011 vol. 531 p. 1 - 8

0004-6361

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 MJup and a radius of 1.02 ± 0.07 RJup, while its mean density is 2.82 ± 0.38 g/cm3. 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 ~380 earth masses of heavier elements.