The HARPS search for southern extrasolar planets - XXV. Results from the metal-poor sample

  title={The HARPS search for southern extrasolar planets - XXV. Results from the metal-poor sample},
  author={Nuno C. Santos and Michel Mayor and Xavier Bonfils and Xavier Dumusque and François Bouchy and Pedro Figueira and Christophe Lovis and Claudio H. F. Melo and Francesco A. Pepe and Didier Queloz and Damien S'egransan and S{\'e}rgio G. Sousa and St{\'e}phane Udry},
  journal={Astronomy and Astrophysics},
Searching for extrasolar planets around stars of different metallicity may provide strong constraints to the models of planet formation and evolution. In this paper we present the overall results of a HARPS (a high-precision spectrograph mostly dedicated to deriving precise radial velocities) program to search for planets orbiting a sample of 104 metal-poor stars (selected [Fe/H] below −0.5). Radial velocity time series of each star are presented and searched for signals using several… Expand
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