Stellar Flybys Interrupting Planet–Planet Scattering Generates Oort Planets

  title={Stellar Flybys Interrupting Planet–Planet Scattering Generates Oort Planets},
  author={Nora Bailey and Daniel C. Fabrycky},
  journal={The Astronomical Journal},
Wide-orbit exoplanets are starting to be detected, and planetary formation models are under development to understand their properties. We propose a population of "Oort" planets around other stars, forming by a mechanism analogous to how the Solar System's Oort cloud of comets was populated. Gravitational scattering among planets is inferred from the eccentricity distribution of gas-giant exoplanets measured by the Doppler technique. This scattering is thought to commence while the… 
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