The SOPHIE search for northern extrasolar planets

F. Bouchy, G. Hébrard, S. Udry, X. Delfosse, I. Boisse, M. Desort, X. Bonfils, A. Eggenberger, D. Ehrenreich, T. Forveille, A.-M. Lagrange, H. Le Coroller, C. Lovis, C. Moutou, F. Pepe, C. Perrier, F. Pont, D. Queloz, N. C. Santos, D. Ségransan, A. Vidal-Madjar

Resumo
We report on the discovery of a substellar companion or a massive Jupiter orbiting the G5V star HD16760 using the spectrograph SOPHIE installed on the OHP 1.93-m telescope. Characteristics and performances of the spectrograph are presented, as well as the SOPHIE exoplanet consortium program. With a minimum mass of 14.3 M_Jup, an orbital period of 465 days and an eccentricity of 0.067, HD16760b seems to be located just at the end of the mass distribution of giant planets, close to the planet/brown-dwarf transition. Its quite circular orbit supports a formation in a gaseous protoplanetary disk.

Palavras chave
planetary systems - techniques: radial velocities - stars: individual: HD 16760

Notas
* Based on observations made with SOPHIE spectrograph on the 1.93-m telescope at Observatoire de Haute-Provence (CNRS/OAMP), France (program 07A.PNP.CONS).
** Table 2 is also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/505/853

Astronomy and Astrophysics
Volume 505, Página 853
outubro 2009

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