The multiplicity of exoplanet host stars - Spectroscopic confirmation of the companions GJ3021B and HD27442B, one new planet host triple-star system, and global statistics

Abstract

We present new results from our ongoing multiplicity study of exoplanet host stars and present a list of 29 confirmed planet host multiple-star systems. Furthermore, we discuss the properties of these stellar systems and compare the properties of exoplanets detected in these systems with those of planets orbiting single stars.

A&A in press, 18 pages, 19 figures

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Cited by in corpus (23)

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• A high binary fraction for the most massive close-in giant planets and brown dwarf desert members
• On the migration of protoplanets embedded in circumbinary disks
• Multiple Stellar Evolution: a population synthesis algorithm to model the stellar, binary, and dynamical evolution of multiple-star systems
• Disk Truncation and Planet Formation in gamma Cephei
• On the evolution of multiple low mass planets embedded in a circumbinary disc
• Frequency of Planets in Binaries
• Disk Detective: Discovery of New Circumstellar Disk Candidates through Citizen Science
• Anomalous Accretion Activity and the Spotted Nature of the DQ Tau Binary System
• TOI-1259Ab -- a gas giant planet with 2.7% deep transits and a bound white dwarf companion
• Multiplicity of stars with planets in the solar neighbourhood
• A Phenomenological Model for the Extended Zone Above AGB Stars
• VIBES: VIsual Binary Exoplanet survey with SPHERE Upper limits on wide S-planet and S-BD frequencies, triple system discovery, and astrometric confirmation of 20 stellar binaries and three triple systems
• An Early Catalog of Planet Hosting Multiple Star Systems of Order Three and Higher
• Increasing the census of L and T dwarfs in wide binary and multiple systems using Dark Energy Survey DR1 and Gaia DR2 data
• Simulations of the dynamics of the debris disks in the systems Kepler-16, Kepler-34, and Kepler-35
• Planetary system architectures with low-mass inner planets: Direct imaging exploration of mature systems beyond 1 au
• Spectroscopy of TOI-1259B -- an unpolluted white dwarf companion to an inflated warm Saturn
• Binary frequency of planet-host stars at wide separations: A new brown dwarf companion to a planet-host star
• Dynamical architecture of the HD 107148 system
• Tidal star-planet interaction and its observed impact on stellar activity in planet-hosting wide binary systems