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Status: Unchecked ×Keyword: protoplanet accretion ×Clear all

2 claims from 1 paper

1. Physics and Astronomy › Astro and Planetary Science

   The Role of Early Giant-planet Instability in Terrestrial Planet Formation

   Nesvorný, Roig and Deienno · The Astronomical Journal · 2021

   Simulations of terrestrial planet formation test how an early giant-planet instability affects the outcome, including Mars's small size and the tight spacing of Venus and Earth.

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   1. UncheckedIn the paper's simulations, terrestrial planet formation turned out practically the same whether giant planets start on current orbits or evolve through an instability.“It does not matter, however, whether the giant planets are placed on their current orbits at t_0 or whether they realistically evolve in one of our instability models; the results are practically the same.”
   2. UncheckedSimulations of terrestrial planet growth match the solar system best when bodies start in a narrow ring and are at least Mars-sized as the gas disc disperses.“The best results are obtained in the narrow-annulus model when protoplanets emerging from the dispersing gas nebula are assumed to have (at least) the Mars mass.”