Predictions for the frequency and orbital radii of massive extrasolar planets

  title={Predictions for the frequency and orbital radii of massive extrasolar planets},
  author={Philip J. Armitage and Mario Livio and Stephen H. Lubow and James Edward Pringle},
  journal={Monthly Notices of the Royal Astronomical Society},
We investigate the migration of massive extrasolar planets caused by gravitational interaction with a viscous protoplanetary disc. We show that a model in which planets form at 5 au at a constant rate, before migrating, leads to a predicted distribution of planets that is a steeply rising function of log(a), where a is the orbital radius. Between 1 and 3 au, the expected number of planets per logarithmic interval in a roughly doubles. We demonstrate that, once selection effects are accounted… Expand

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