Resolving the Multiplicity of Exoplanet Host Stars in Gemini/NIRI Data

  title={Resolving the Multiplicity of Exoplanet Host Stars in Gemini/NIRI Data},
  author={Kim Miskovetz and Trent J. Dupuy and Jessica Schonhut-Stasik and Keivan G. Stassun},
  journal={Research Notes of the AAS},
The majority of stars have one or more stellar companions. As exoplanets continue to be discovered, it is crucial to examine planetary systems to identify their stellar companions. By observing a change in proper motion, companions can be detected by the acceleration they induce on their host stars. We selected 701 stars from the Hipparcos–Gaia Catalog of Accelerations (HGCA) that have existing adaptive optics imaging data gathered with Gemini/Near InfraRed Imager (NIRI). Of these, we examined… 

SCExAO and Keck Direct Imaging Discovery of a Low-mass Companion Around the Accelerating F5 Star HIP 5319

We present the direct imaging discovery of a low-mass companion to the nearby accelerating F star, HIP 5319, using SCExAO coupled with the CHARIS, VAMPIRES, and MEC instruments in addition to



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

Stellar and substellar companions of nearby stars from Gaia DR2

Context. The census of stellar and substellar companions of nearby stars is largely incomplete, in particular toward the low-mass brown dwarf and long-period exoplanets. It is, however, fundamentally

The International Deep Planet Survey: II. The frequency of directly imaged giant exoplanets with stellar mass

Radial velocity and transit methods are effective for the study of short orbital period exoplanets but they hardly probe objects at large separations for which direct imaging can be used. We carried


The dynamical influence of binary companions is expected to profoundly influence planetary systems. However, the difficulty of identifying planets in binary systems has left the magnitude of this

Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis*

The possible existence of additional long-period planetary-mass objects in the extrasolar planetary systems 47 UMa and 14 Her is investigated. We combine all available radial velocity data on these

Gaia Data Release 2

Context. The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the first 22 months

Predicting stellar angular diameters from V, I C , H and K photometry

Determining the physical properties of microlensing events depends on having accurate angular sizes of the source star. Using long-baseline optical interferometry we are able to measure the angular

Three Wide-Separation L Dwarf Companions from the Two Micron All Sky Survey: Gliese 337C, Gliese 618.1B, and HD 89744B

We present two confirmed wide-separation L dwarf common proper-motion companions to nearby stars and one candidate identified from the Two Micron All Sky Survey. Spectral types from optical

Mind Your Ps and Qs: The Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars

We compile observations of early-type binaries identified via spectroscopy, eclipses, long-baseline interferometry, adaptive optics, common proper motion, etc. Each observational technique is

94 Ceti: a triple star with a planet and dust disc

94 Ceti is a triple star system with a circumprimary gas giant planet and far-infrared excess. Such excesses around main sequence stars are likely due to debris discs, and are considered as signposts