Extrasolar planets in stellar multiple systems

@article{Roell2012ExtrasolarPI,
  title={Extrasolar planets in stellar multiple systems},
  author={Tristan Roell and Andreas Seifahrt and Ralph Neuhauser and M. Mugrauer Astrophysical Institute and University of ArizonaSteward Observatory and Jena and H Germany and Physics Department and University of Southern California and Davis and Usa and Department of Physics Astronomy and Astrophysics and University of Chicago},
  journal={Astronomy and Astrophysics},
  year={2012},
  volume={542}
}
Aims. Analyzing exoplanets detected by radial velocity (RV) or transit observations, we determine the multiplicity of exoplanet host stars in order to study the influence of a stellar companion on the properties of planet candidates. Methods. Matching the host stars of exoplanet candidates detected by radial velocity or transit observations with online multiplicity catalogs in addition to a literature search, 57 exoplanet host stars are identified having a stellar companion. Results. The… 

The multiplicity status of three exoplanet host stars

Aims. The goal of our ongoing study of exoplanet host stars is to determine the true multiplicity rate of such stars. For this purpose we aim to research a statistically significant and homogeneously

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Context. Many main-sequence stars are part of multiple systems. The effect of stellar multiplicity on planet formation and migration, however, is poorly understood. Aims. We study the multiplicity of

LIMITS ON STELLAR COMPANIONS TO EXOPLANET HOST STARS WITH ECCENTRIC PLANETS

Though there are now many hundreds of confirmed exoplanets known, the binarity of exoplanet host stars is not well understood. This is particularly true of host stars that harbor a giant planet in a

A lucky imaging multiplicity study of exoplanet host stars

To understand the influence of additional wide stellar companions on planet formation, it is necessary to determine the fraction of multiple stellar systems amongst the known extrasolar planet

Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release

  • M. Mugrauer
  • Geology, Physics
    Monthly Notices of the Royal Astronomical Society
  • 2019
A new survey is presented, which explores the second data release of the ESA-Gaia mission, in order to search for stellar companions of exoplanet host stars, located at distances closer than about

Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

We explore the impact of outer stellar companions on the occurrence rate of giant planets detected with radial velocities. We searched for stellar and planetary companions to a volume-limited sample

INFLUENCE OF STELLAR MULTIPLICITY ON PLANET FORMATION. II. PLANETS ARE LESS COMMON IN MULTIPLE-STAR SYSTEMS WITH SEPARATIONS SMALLER THAN 1500 AU

Almost half of the stellar systems in the solar neighborhood are made up of multiple stars. In multiple-star systems, planet formation is under the dynamical influence of stellar companions, and the

The Census of Exoplanets in Visual Binaries: Population Trends from a Volume-Limited Gaia DR2 and Literature Search

We present results from an extensive search in the literature and Gaia DR2 for visual co-moving binary companions to stars hosting exoplanets and brown dwarfs within 200 pc. We found 218 planet hosts

Archival VLT/NaCo multiplicity investigation of exoplanet host stars

Context. The influence of stellar multiplicity on planet formation is not yet well determined. Most planets are found using indirect detection methods via the small radial velocity or photometric

How many suns are in the sky? A SPHERE multiplicity survey of exoplanet host stars

Aims. We are studying the influence of stellar multiplicity on exoplanet systems and, in particular, systems that have been detected via radial-velocity searches. We are specifically interested in
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