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Status: Unchecked ×Keyword: radial mixing ×Clear all

3 claims from 1 paper

1. Physics and Astronomy › Stellar, planetary, and galactic studies

   On the Local Formation of the TRAPPIST-1 Exoplanets

   Clement, Quintana and Stevenson · The Astronomical Journal · 2024

   Over 600 accretion simulations with collisional fragmentation test whether the TRAPPIST-1 planets could have formed near their current orbits, tracking volatile and iron contents and tidal migration.

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   1. UncheckedThe paper concludes that a trend in bulk iron content more likely explains why TRAPPIST-1 planets' uncompressed densities fall with distance from the star.“We conclude that a trend in bulk iron contents is the more likely explanation for the observed radial trend of decreasing uncompressed densities in the real system.”
   2. UncheckedIn most of the authors' simulations of TRAPPIST-1, all seven planets end up with similar volatile contents because of strong radial mixing.“Given the degree of radial mixing that occurs in our simulations, in most cases we find that all seven planets finish with similar volatile contents.”
   3. Unchecked“By applying a tidal migration model to our most promising accretion model results, we demonstrate cases where higher-order resonances are populated.”