Transiting exoplanets from the CoRoT space mission. XVIII. CoRoT-18b: a massive hot Jupiter on a prograde, nearly aligned orbit

  title={Transiting exoplanets from the CoRoT space mission. XVIII. CoRoT-18b: a massive hot Jupiter on a prograde, nearly aligned orbit},
  author={Guillaume H{\'e}brard and Thomas M. Evans and Roi Alonso and Malcolm Fridlund and Aviv Ofir and Suzanne Aigrain and Tristan Guillot and J. M. Almenara and Michel Auvergne and Annie Baglin and Pierre Barge and Aldo S Bonomo and P. Bord{\'e} and François Bouchy and J. Cabrera and Ludmila Carone and Stefania Carpano and C{\'e}line Cavarroc and Sz. Csizmadia and H. J. Deeg and Magali Deleuil and Rodrigo F. D{\'i}az and Rudolf Dvorak and Anders Erikson and Sylvio Ferraz-Mello and Davide Gandolfi and Neale P. Gibson and Micha{\"e}l Gillon and E W Guenther and A. P. Hatzes and Mathieu Havel and Laurent Jorda and Helmut Lammer and Alain M. Leger and Antoine Llebaria and Tsevi Mazeh and Claire Moutou and Marc Ollivier and Hannu Parviainen and Martin Patzold and Didier Queloz and Heike Rauer and Daniel Rouan and Alexandre Santerne and Jodi Schneider and Brandon Tingley and G{\"u}nther Wuchterl},
  journal={Astronomy and Astrophysics},
We report the detection of CoRoT-18b, a massive hot jupiter transiting in front of its host star with a period of 1.9000693 +/- 0.0000028 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite combined with spectroscopic and photometric ground-based follow-up observations. The planet has a mass M_p = 3.47 +/- 0.38 M_Jup, a radius R_p = 1.31 +/- 0.18 R_Jup, and a density rho_p = 2.2 +/- 0.8 g/cm3. It orbits a G9V star with a mass M_* = 0.95 +/- 0.15 M_Sun, a… Expand
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