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- W4301367006 abstract "Whether the higher occurrence of giant planets being hosted by metal-rich versus metal-poor stars results from formation or from pollution has been a question of intense debate. We present new patterns that emerge when planet/star systems are separated by stellar [Fe/H], and when systems with stellar companions are separated out. These differences can best be explained if the onset of high eccentricity planet migration is also a time when planet are sent into merge with the star. Planet migration into the star is likely a complementary explanation to the view that systems with higher initial iron abundance form more planets, and that more crowded planets are more likely to scatter into eccentric orbits. Planets of iron-rich single stars have eccentricity distributions that are higher than planets of iron-poor single stars (where rich and poor are stars whose [Fe/H] is above and below solar, respectively). Stars with planets that have a stellar companion comprise a third population of systems in which the stars are preferentially iron-rich. We describe new patterns that are best explained by eccentric planet migration being associated with other planets migrating into the star. Though medium planets are more numerous than giant planets at periods greater than three days, giant planets are more numerous than medium planets at the shortest periods. Since giant planets migrate into the star faster, we show this as evidence of giant planet migration. Planet migration into the star is certain to be an important part of planetary system evolution." @default.
- W4301367006 created "2022-10-05" @default.
- W4301367006 creator A5077271504 @default.
- W4301367006 date "2013-05-22" @default.
- W4301367006 modified "2023-09-27" @default.
- W4301367006 title "Iron abundance correlations and an occurrence distribution discrepancy from ongoing planet migration" @default.
- W4301367006 doi "https://doi.org/10.48550/arxiv.1305.5197" @default.
- W4301367006 hasPublicationYear "2013" @default.
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