Close stellar encounters with planetesimal discs: the dynamics of asymmetry in the β Pictoris system

  title={Close stellar encounters with planetesimal discs: the dynamics of asymmetry in the $\beta$ Pictoris system},
  author={John D. Larwood and Paul Kalas},
  journal={Monthly Notices of the Royal Astronomical Society},
  • J. Larwood, P. Kalas
  • Published 14 November 2000
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We numerically investigate the dynamics of how a close stellar fly-by encounter of a symmetrical circumstellar planetesimal disc can give rise to the many kinds of asymmetries and substructures attributed to the edge-on dusty disc of β Pictoris. In addition we present new optical coronagraphic observations of the outer parts of the disc of β Pic, and report that the radial extent is significantly greater than was found in previous measurements. The north-easterly extension of the disc's mid… Expand
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