Binary frequency of planet-host stars at wide separations: A new brown dwarf companion to a planet-host star

  title={Binary frequency of planet-host stars at wide separations: A new brown dwarf companion to a planet-host star},
  author={Nicolas Lodieu and Antonio P{\'e}rez-Garrido and V. J. S. B{\'e}jar and Bartosz Gauza and Mar'ia Teresa Ruiz and Rafael Rebolo and D J Pinfield and E. L. Martin Iac and Tenerife and Spain. and Ull and Cartagena and Universidad Catolica de Chile and Chile. and Csic and Hertfordshire and UK. and C. N. Tadhunter INTA-CSIC and Madrid},
  journal={arXiv: Earth and Planetary Astrophysics},
The aim of the project is to improve our knowledge on the multiplicity of planet-host stars at wide physical separations. We cross-matched approximately 6200 square degree area of the Southern sky imaged by the Visible Infrared Survey Telescope for Astronomy (VISTA) Hemisphere Survey (VHS) with the Two Micron All Sky Survey (2MASS) to look for wide common proper motion companions to known planet-host stars. We complemented our astrometric search with photometric criteria. We confirmed… 

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