The completeness-corrected rate of stellar encounters with the Sun from the first Gaia data release

  title={The completeness-corrected rate of stellar encounters with the Sun from the first Gaia data release},
  author={Coryn A. L. Bailer-Jones},
  journal={arXiv: Solar and Stellar Astrophysics},
  • C. Bailer-Jones
  • Published 29 August 2017
  • Physics, Geology
  • arXiv: Solar and Stellar Astrophysics
I report on close encounters of stars to the Sun found in the first Gaia data release (GDR1). Combining Gaia astrometry with radial velocities of around 320 000 stars drawn from various catalogues, I integrate orbits in a Galactic potential to identify those stars which pass within a few parsecs. Such encounters could influence the solar system, for example through gravitational perturbations of the Oort cloud. 16 stars are found to come within 2 pc (although a few of these have dubious data… 
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