New stellar encounters discovered in the second Gaia data release

  title={New stellar encounters discovered in the second Gaia data release},
  author={C. Bailer-Jones and J. Rybizki and R. Andrae and M. Fouesneau},
  journal={arXiv: Solar and Stellar Astrophysics},
  • C. Bailer-Jones, J. Rybizki, +1 author M. Fouesneau
  • Published 2018
  • Physics
  • arXiv: Solar and Stellar Astrophysics
  • Passing stars may play an important role in the evolution of our solar system. We search for close stellar encounters to the Sun among all 7.2 million stars in Gaia-DR2 that have six-dimensional phase space data. We characterize encounters by integrating their orbits through a Galactic potential and propagating the correlated uncertainties via a Monte Carlo resampling. After filtering to remove spurious data, we find 694 stars that have median (over uncertainties) closest encounter distances… CONTINUE READING
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