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- W3100373229 endingPage "101" @default.
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- W3100373229 abstract "Many exoplanets in close-in orbits are observed to have relatively high eccentricities and large stellar obliquities. We explore the possibility that these result from planet–planet scattering by studying the dynamical outcomes from a large number of orbit integrations in systems with two and three gas-giant planets in close-in orbits (0.05 AU < a < 0.15 AU). We find that at these orbital separations, unstable systems starting with low eccentricities and mutual inclinations (e ≲ 0.1, i ≲ 0.1) generally lead to planet–planet collisions in which the collision product is a planet on a low-eccentricity, low-inclination orbit. This result is inconsistent with the observations. We conclude that eccentricity and inclination excitation from planet–planet scattering must precede migration of planets into short-period orbits. This result constrains theories of planet migration: the semi-major axis must shrink by 1–2 orders of magnitude without damping the eccentricity and inclination." @default.
- W3100373229 created "2020-11-23" @default.
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- W3100373229 date "2014-04-22" @default.
- W3100373229 modified "2023-09-30" @default.
- W3100373229 title "SCATTERING OUTCOMES OF CLOSE-IN PLANETS: CONSTRAINTS ON PLANET MIGRATION" @default.
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- W3100373229 doi "https://doi.org/10.1088/0004-637x/786/2/101" @default.
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