Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742601.0, MPI für Astronomie / Publikationen_mpia
Discovery of a stellar companion to HD 131399A
Authors:Lagrange, A. -. M.; Keppler, M.; Beust, H.; Rodet, L.; Meunier, N.; Lillo-Box, J.; Bonnefoy, M.; Galland, F.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:Astronomy and Astrophysics
Volume:608
Start Page:id. L9 (5 pp)
Audience:Not Specified
Abstract / Description:Context. The giant exoplanets imaged on wide orbits (≥10 au) around young stars challenge the classical theories of planet formation. The presence of perturbing bodies could have played a role in the dynamical evolution of the planets once formed. <BR /> Aims: We aim to search for close companions to HD 131399, a star around which a giant planet has been discovered, at a projected separation of about 80 au. The star also appears to be a member of a wide (320 au) binary system. <BR /> Methods: We recorded HARPS high resolution spectra in January 2017. <BR /> Results: We find that HD 131399A is probably seen close to pole-on. We discover a low mass star companion that orbits with a period of about 10 days on a misaligned orbit. Even though the companion does not have an impact on the current dynamical evolution of the planet, it could have played a role in its setting and in clearing the circumstellar disk from which the planet may originate. Based on data obtained with the ESO3.6 m/HARPS spectrograph at La Silla.
Free Keywords:techniques: radial velocities; planetary systems; binaries: close; stars: individual: HD 131399
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6361
URL:http://adsabs.harvard.edu/abs/2017A%26A...608L...9...
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.