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. Bruntt, L. Carone, S. Carpano, C. Cavarroc, W. CochranH. J. Deeg, R. F. Díaz, R. Dvorak, M. Endl, A. Erikson, S. Ferraz-Mello, Th Fruth, J. C. Gazzano, M. Gillon, E. W. Guenther, T. Guillot, A. Hatzes, M. Havel, G. Hébrard, E. Jehin, L. Jorda, A. Léger, A. Llebaria, H. Lammer, C. Lovis, P. J. MacQueen, T. Mazeh, M. Ollivier, M. Pätzold, D. Queloz, H. Rauer, D. Rouan, A. Santerne, J. Schneider, B. Tingley, R. Titz-Weider, G. Wuchterl

Research output: Contribution to journalArticlepeer-review


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 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.

Original languageEnglish
Article numberA41
JournalAstronomy and Astrophysics
StatePublished - 2011


  • planetary systems
  • techniques: photometric
  • techniques: radial velocities
  • techniques: spectroscopic


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