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Status: Unchecked ×Keyword: WFIRST ×Clear all

2 claims from 1 paper

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

   The Demographics of Rocky Free-floating Planets and their Detectability by WFIRST

   Barclay, Quintana, Raymond and Penny · The Astrophysical Journal · 2017

   The authors ran 300 N-body simulations of terrestrial planet formation, with and without giant planets, to estimate how much material is ejected and how many free-floating planets WFIRST might detect.

   Unchecked2 claims
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   1. Unchecked“In simulations with Jupiter and Saturn analogs, about one-third of the initial (~5 Mearth) disk mass is ejected, about half in planets more massive than Mercury but less than 0.3 Mearth, and the remainder in smaller bodies.”
   2. UncheckedIn simulations without giant planets, almost no disk material is ejected within 200 million years and only about 1% by 2 billion years.“When giant planets are omitted from our simulations, almost no material is ejected within 200 Myr and only about 1% of the initial disk is ejected by 2 Gyr.”