Stellar Encounters with the β Pictoris Planetesimal System

  title={Stellar Encounters with the $\beta$ Pictoris Planetesimal System},
  author={Paul Kalas and Jean-Marc Deltorn and John D. Larwood},
  journal={The Astrophysical Journal},
We use data from the Hipparcos catalog and the Barbier-Brossat & Figon catalog of stellar radial velocities to test the hypothesis that the b Pic planetesimal disk was disrupted by a close stellar encoun- ter. We trace the space motions of 21,497 stars and discover 18 that have passed within 5 pc of b Pic in the past 1 Myr. b Pics closest encounter is with the K2 III star HIP 27628 (D0.6 pc), but dynamically the most important encounter is with the F7 V star HIP 23693 (D0.9 pc). We calculate… Expand

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