The effect of late giant collisions on the atmospheres of protoplanets and the formation of cold sub-Saturns
Mohamad Ali-Dib,
Andrew Cumming,
Douglas N. C. Lin
Abstract:We investigate the origins of cold sub-Saturns (CSS), an exoplanetary population inferred from microlensing surveys. If confirmed, these planets would rebut a theorised gap in planets' mass distribution between those of Neptune and Jupiter caused by the rapid runaway accretion of super-critical cores. In an attempt to resolve this theoretical-observational disparity, we examine the outcomes of giant collisions between sub-critical protoplanets. Due to the secular interaction among protoplanets, these events ma… Show more
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