Sub-Neptune Formation: The View from Resonant Planets

  title={Sub-Neptune Formation: The View from Resonant Planets},
  author={Nick Choksi and Eugene Y Chiang},
  journal={arXiv: Earth and Planetary Astrophysics},
  • Nick Choksi, Eugene Y Chiang
  • Published 2020
  • Physics
  • arXiv: Earth and Planetary Astrophysics
  • The orbital period ratios of neighbouring sub-Neptunes are distributed asymmetrically near first-order resonances. There are deficits of systems---"troughs'' in the period ratio histogram---just short of commensurability, and excesses---"peaks''---just wide of it. We reproduce quantitatively the strongest peak-trough asymmetries, near the 3:2 and 2:1 resonances, using dissipative interactions between planets and their natal disks. Disk eccentricity damping captures bodies into resonance and… CONTINUE READING