Pairing function of visual binary stars

  title={Pairing function of visual binary stars},
  author={Dmitry Chulkov},
  journal={arXiv: Solar and Stellar Astrophysics},
  • D. Chulkov
  • Published 15 November 2020
  • Physics
  • arXiv: Solar and Stellar Astrophysics
An all-sky sample of 1227 visual binaries based on Washington Double Star catalogue is constructed to infer the IMF, mass ratio, and projected distance distribution with a dedicated population synthesis model. Parallaxes from Gaia DR2 and Hipparcos are used to verify the distance distribution. The model is validated on the single-star Tycho-2 sample and successfully reproduces the observed magnitudes and angular separations. The projected separation distribution follows $f(s)\sim s^{-1.2}$ in… 
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