Brown dwarf companion with a period of 4.6 yr interacting with the hot Jupiter CoRoT-20b
Artikel i vetenskaplig tidskrift, 2018

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 MJup 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.

Planetary systems

Brown dwarfs

Stars: Low-mass

Planets and satellites: Dynamical evolution and stability

Techniques: Radial velocities

Stars: Individual: CoRoT-20

Författare

J. Rey

Universite de Geneve

F. Bouchy

Universite de Geneve

M. Stalport

Universite de Geneve

M. Deleuil

Laboratoire d'Astrophysique de Marseille

G. Hebrard

Institut d 'Astrophysique de Paris

Observatoire de Haute-Provence

J. M. Almenara

Universite de Geneve

R. Alonso

Instituto Astrofisico de Canarias

Universidad de la Laguna

S.C.C. Barros

Universidade do Porto

A. S. Bonomo

Istituto nazionale di astrofisica (INAF)

G. Cazalet

Laboratoire d'Astrophysique de Marseille

J. B. Delisle

Universite de Geneve

R. F. Diaz

Universidad de Buenos Aires

Malcolm Fridlund

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Galaktisk astrofysik

Universiteit Leiden

E. W. Guenther

Instituto Astrofisico de Canarias

Thüringer Landessternwarte Tautenburg

T. Guillot

Observatoire de la Cote d'Azur

G. Montagnier

Observatoire de Haute-Provence

Institut d 'Astrophysique de Paris

C. Moutou

Canada France Hawaii Telescope Corporation

C. Lovis

Universite de Geneve

D. Queloz

University of Cambridge

A. Santerne

Laboratoire d'Astrophysique de Marseille

S. Udry

Universite de Geneve

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 619 A115

Ämneskategorier

Rymd- och flygteknik

Astronomi, astrofysik och kosmologi

Biomedicinsk laboratorievetenskap/teknologi

Infrastruktur

Onsala rymdobservatorium

DOI

10.1051/0004-6361/201833180

Mer information

Senast uppdaterat

2019-04-04