The total number of giant planets in debris discs with central clearings

  title={The total number of giant planets in debris discs with central clearings},
  author={Peter R. Faber and Alice C. Quillen},
  journal={Monthly Notices of the Royal Astronomical Society},
Infrared spectra from the Spitzer Space Telescope (SSC) of many debris discs are well fit with a single blackbody temperature which suggest clearings within the disc. We assume that clearings are caused by orbital instability in multiple planet systems with similar configurations to our own. These planets remove dust-generating planetesimal belts as well as dust generated by the outer disc that is scattered or drifts into the clearing. From numerical integrations, we estimate a minimum planet… 

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