The SOPHIE search for northern extrasolar planets VII. A warm Neptune orbiting HD164595 - IRFU-APC Accéder directement au contenu
Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2015

The SOPHIE search for northern extrasolar planets VII. A warm Neptune orbiting HD164595

B. Courcol
  • Fonction : Auteur
L. Arnold
  • Fonction : Auteur
N. Astudillo-Defru
V. Bourrier
N. Cabrera
  • Fonction : Auteur
M. Deleuil
R. F. Diaz
  • Fonction : Auteur
C. Moutou
P. A. Wilson
  • Fonction : Auteur

Résumé

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 measurements 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-circle dot 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.

Dates et versions

hal-01439830 , version 1 (18-01-2017)

Identifiants

Citer

B. Courcol, F. Bouchy, F. Pepe, A. Santerne, X. Delfosse, et al.. The SOPHIE search for northern extrasolar planets VII. A warm Neptune orbiting HD164595. Astronomy and Astrophysics - A&A, 2015, 581, ⟨10.1051/0004-6361/201526329⟩. ⟨hal-01439830⟩
413 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More