Author： Hobson M. J. Díaz R. F. Delfosse X. Astudillo-Defru N. Boisse I. Bouchy F. Bonfils X. Forveille T. Hara N. Arnold L. Borgniet S. Bourrier V. Brugger B. Cabrera N. Courcol B. Dalal S. Deleuil M. Demangeon O. Dumusque X. Ehrenreich D. Hébrard G. Kiefer F. Lopez T. Mignon L. Montagnier G. Mousis O. Moutou C. Pepe F. Rey J. Santerne A. Santos N. Stalport M. Ségransan D. Udry S. Wilson P. A.
Publisher： Edp Sciences
E-ISSN： 1432-0746|618|issue|A103-A103
ISSN： 0004-6361
Source： Astronomy & Astrophysics, Vol.618, Iss.issue, 2018-10, pp. : A103-A103
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
We report the detection of two exoplanets and a further tentative candidate around the M-dwarf stars Gl96 and Gl617A, based on radial velocity measurements obtained with the SOPHIE spectrograph at the Observatoire de Haute-Provence. Both stars were observed in the context of the SOPHIE exoplanet consortium’s dedicated M-dwarf subprogramme, which aims to detect exoplanets around nearby M-dwarf stars through a systematic survey. For Gl96 we present the discovery of a new exoplanet at 73.9 d with a minimum mass of 19.66 earth masses. Gl96 b has an eccentricity of 0.44, placing it among the most eccentric planets orbiting M stars. For Gl617A we independently confirm a recently reported exoplanet at 86.7 d with a minimum mass of 31.29 earth masses. Both Gl96 b and Gl617A b are potentially within the habitable zone, although the high eccentricity of Gl96 b may take it too close to the star at periapsis.
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