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Status: Unchecked ×Keyword: test particle simulation ×Clear all

3 claims from 1 paper

1. Physics and Astronomy › Astro and Planetary Science

   THE EVOLUTION OF ASTEROIDS IN THE JUMPING-JUPITER MIGRATION MODEL

   Roig and A · The Astronomical Journal · 2015

   Simulations of test particles under a jumping-Jupiter planetary migration, run for 4 Gyr, were compared with today's Main Belt, and also tested whether Hildas and Trojans could survive the instability.

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   1. UncheckedTo match today's Main Belt, simulations suggest the original asteroid belt had orbits peaked near 10° inclination and about 0.1 eccentricity.“The results indicate that, in order to reproduce the present Main Belt, the primordial belt should have had a distribution peaked at $\sim10^{\circ}$ in inclination and at $\sim0.1$ in eccentricity.”
   2. UncheckedIn these simulations, asteroids originally in the Hilda and Trojan groups did not survive the early instability of the giant planets' orbits.“The results also indicate that neither primordial Hildas, nor Trojans, survive the instability, confirming the idea that such populations must have been implanted from other sources.”
   3. UncheckedIn these simulations, planets interacting during migration ejected one Neptune-mass planet within 10 million years, making Jupiter jump about 0.3 au.“Mutual planetary interactions during migration led one of the Neptunes to be ejected in less than 10 Myr of evolution, causing Jupiter to jump by about 0.3 au in semi-major axis.”