Published 2018
| Version v1
Journal article
Brown dwarf companion with a period of 4.6 yr interacting with the hot Jupiter CoRoT-20 b
Contributors
Others:
- Observatoire Astronomique de l'Université de Genève (ObsGE) ; Université de Genève = University of Geneva (UNIGE)
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Institut d'Astrophysique de Paris (IAP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Research and Scientific Support Department, ESTEC (RSSD) ; European Space Research and Technology Centre (ESTEC) ; European Space Agency (ESA)-European Space Agency (ESA)
- Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Description
We report the discovery of an additional substellar companion in the CoRoT-20 system based on six years of HARPS and SOPHIE radial velocity follow-up. CoRoT-20 c has a minimum mass of 17 +/- 1 M-Jup and orbits the host star in 4.59 +/- 0.05 yr, with an orbital eccentricity of 0.60 +/- 0.03. This is the first identified system with an eccentric hot Jupiter and an eccentric massive companion. The discovery of the latter might be an indication of the migration mechanism of the hot Jupiter, via the Lidov-Kozai effect. We explore the parameter space to determine which configurations would trigger this type of interactions.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal-amu.archives-ouvertes.fr/hal-02057660
- URN
- urn:oai:HAL:hal-02057660v1
Origin repository
- Origin repository
- UNICA