On the Stellar Companion to the Exoplanet Hosting Star 30 Arietis B
arXiv:1511.01533 · doi:10.1088/0004-637X/815/1/32
Abstract
A crucial aspect of understanding planet formation is determining the binarity of the host stars. Results from radial velocity surveys and the follow-up of Kepler exoplanet candidates have demonstrated that stellar binarity certainly does not exclude the presence of planets in stable orbits and the configuration may in fact be relatively common. Here we present new results for the 30 Arietis system which confirms that the B component hosts both planetary and stellar companions. Keck AO imaging provides direct detection of the stellar companion and additional radial velocity data are consistent with an orbiting star. We present a revised orbit of the known planet along with photometry during predicted transit times. Finally, we provide constraints on the properties of the stellar companion based on orbital stability considerations.
9 pages, 6 figures, 4 tables, accepted for publication in the Astrophysical Journal, references updated
References in corpus (13)
- The Dartmouth Stellar Evolution Database
- New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
- A survey of the high order multiplicity of nearby solar-type binary stars with Robo-AO
- Efficient fitting of multiplanet Keplerian models to radial velocity and astrometry data
- From binaries to multiples I: Data on F and G dwarfs within 67 pc of the Sun
- Influence of Stellar Multiplicity On Planet Formation. II. Planets Are Less Common in Multiple-Star Systems with Separations Smaller than 1500 AU
- Most Sub-Arcsecond Companions of Kepler Exoplanet Candidate Host Stars are Gravitationally Bound
- High-efficiency Autonomous Laser Adaptive Optics
- High-resolution Multi-band Imaging for Validation and Characterization of Small Kepler Planets
- Adaptive Optics Images III: 87 Kepler Objects of Interest
- Spectroscopic parameters for solar-type stars with moderate/high rotation. New parameters for 10 planet-hosts
- Limits on Stellar Companions to Exoplanet Host Stars With Eccentric Planets
- Know the Star, Know the Planet. III. Discovery of Late-Type Companions to Two Exoplanet Host Stars
Cited by in corpus (12)
- The Impact of Stellar Multiplicity on Planetary Systems, I.: The Ruinous Influence of Close Binary Companions
- A high binary fraction for the most massive close-in giant planets and brown dwarf desert members
- Orbital Architectures of Planet-Hosting Binaries II. Low Mutual Inclinations Between Planetary and Stellar Orbits
- Extrasolar planets and brown dwarfs around AF-type stars. IX. The HARPS southern sample
- Extrasolar planets and brown dwarfs around AF-type stars. X.The SOPHIE northern sample. Combining the SOPHIE and HARPS surveys to compute the close giant planet mass-period distribution around AF-type stars
- Radial Velocity Survey for Planets around Young stars (RVSPY) A transiting warm super-Jovian planet around HD 114082, a young star with a debris disk
- Stellar Companions to the Exoplanet Host Stars HD 2638 and HD 164509
- Discovery of a Compact Companion to a Nearby Star
- Dynamical Architectures of S-type Transiting Planets in Binaries I: Target Selection using Hipparcos and Gaia proper motion anomalies
- Dynamical Architectures of S-type Transiting Planets in Binaries II: A Dichotomy in Orbital Alignment of Small Planets in Close Binary Systems
- True Masses using RV data with Hipparcos and Gaia Astrometry
- Tidal star-planet interaction and its observed impact on stellar activity in planet-hosting wide binary systems