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Toward a Deterministic Model of Planetary Formation. III. Mass Distribution of Short‐Period Planets around Stars of Various Masses
The origin of a recently discovered close-in Neptune-mass planet around GJ436 poses a challenge to the current theories of planet formation. Based on the sequential accretion hypothesis and the standard theory of gap formation and orbital migration, we show that around M dwarf stars, close-in Neptune-mass ice-giant planets may be …