Atmosphere Origins for Exoplanet Sub-Neptunes

Edwin S. Kite, Bruce Fegley, Laura Schaefer +1

Planets with 2 $R_{\oplus }$ < $R$ < 3 $R_{\oplus }$ and orbital period $<$100 d are abundant; these sub-Neptune exoplanets are not well understood. For example, $Kepler$ sub-Neptune…