Rapid-then-slow migration reproduces mass distribution of TRAPPIST-1 system
Masahiro Ogihara,
Eiichiro Kokubo,
Ryuunosuke Nakano
et al.
Abstract:Context. The TRAPPIST-1 system is an iconic planetary system in various aspects (e.g., habitability, resonant relation, and multiplicity) and hence has attracted considerable attention. The mass distribution of the TRAPPIST-1 planets is characterized by two features: the two inner planets are large, and the masses of the four planets in the outer orbit increase with orbital distance. The origin of these features cannot be explained by previous formation models. Aims. We investigate whether the mass distributio… Show more
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