David Ehrenreich University of Geneva, Department of Astronomy Xavier Delfosse Universite de Grenoble I Guillaume Hebrard CNRS, Institut d'Astrophysique de Paris Alain Lecavelier des Etangs CNRS, Institut d'Astrophysique de Paris David K. Sing The Johns Hopkins University Stephane Udry University of Geneva, Department of Astronomy Alfred Vidal-Madjar CNRS, Institut d'Astrophysique de Paris