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- Title
The SOPHIE search for northern extrasolar planets.
- Authors
Courcol, B.; Bouchy, F.; Pepe, F.; Santerne, A.; Delfosse, X.; Arnold, L.; Astudillo, N.; Bonfils, X.; Borgniet, S.; Bourrier, V.; Cabrera, N.; Deleuil, M.; Demangeon, O.; Díaz, R. F.; Ehrenreich, D.; Forveille, T.; Hébrard, G.; Lagrange, A. M.; Montagnier, G.; Moutou, C.
- Abstract
High-precision radial velocity surveys explore the population of low-mass exoplanets orbiting bright stars. This allows accurately deriving their orbital parameters such as their occurrence rate and the statistical distribution of their properties. Based on this, models of planetary formation and evolution can be constrained. The SOPHIE spectrograph has been continuously improved in past years, and thanks to an appropriate correction of systematic instrumental drift, it is now reaching 2 ms-1 precision in radial velocity mea- surements on all timescales. As part of a dedicated radial velocity survey devoted to search for low-mass planets around a sample of 190 bright solar-type stars in the northern hemisphere, we report the detection of a warm Neptune with a minimum mass of 16 1 ± 2.7 M&#7609 orbiting the solar analog HD164595 in 40 ± 0 24 days. We also revised the parameters of the multiplanetary system. around HD190360. We discuss this new detection in the context of the upcoming space mission CHEOPS, which is devoted to a transit search of bright stars harboring known exoplanets.
- Subjects
EXTRASOLAR planets; STARS with planets; RADIAL velocity of stars; NEPTUNE (Planet); DISTRIBUTION (Probability theory)
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2015, Vol 581, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201526329