XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet

  title={XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet},
  author={Magali Deleuil and Aldo Stefano Bonomo and Sylvio Ferraz-Mello and Anders Erikson and François Bouchy and Mathieu Havel and Suzanne Aigrain and Jose M. Almenara and Roi Alonso and Michel Auvergne and Annie Baglin and Pierre Barge and P. Bord'e and Hans Bruntt and Juan Cabrera and Stefania Carpano and C{\'e}line Cavarroc and Sz. Csizmadia and Cilia Damiani and Hans J. Deeg and Rudolf Dvorak and Malcolm Fridlund and Guillaume H'ebrard and Davide Gandolfi and Micha{\"e}l Gillon and E. W. Guenther and Tristan Guillot and A. P. Hatzes and Laurent Jorda and Alain L'eger and Helmut Lammer and Tsevi Mazeh and Claire Moutou and Marc Ollivier and Aviv Ofir and Hannu Parviainen and Didier Queloz and Heike Rauer and A. K. D'iaz Rodr'iguez and Daniel Rouan and Alexandre Santerne and Jodi Schneider and L. Tal-Or and Brandon Tingley and Joerg Weingrill and G{\"u}nther Wuchterl},
  journal={arXiv: Earth and Planetary Astrophysics},
We report the discovery by the CoRoT space mission of a new giant planet, CoRoT-20b. The planet has a mass of 4.24 +/- 0.23 MJ and a radius of 0.84 +/- 0.04 RJ. With a mean density of 8.87 +/- 1.10 g/cm^3, it is among the most compact planets known so far. Evolution models for the planet suggest a mass of heavy elements of the order of 800 ME if embedded in a central core, requiring a revision either of the planet formation models or of planet evolution and structure models. We note however… 
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