Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.6008s&link_type=abstract
American Astronomical Society, DPS meeting #39, #60.08; Bulletin of the American Astronomical Society, Vol. 39, p.538
Astronomy and Astrophysics
Astronomy
Scientific paper
During their early migration phase due to planetesimal scattering, Jupiter and Saturn may have crossed their mutual 2:1 mean motion resonance (MMR) according to the NICE model. Initial Jupiter Trojans are totally removed during this phase. We show that the synergy of three different effects is responsable: (i) presence of a secular resonance with one of the fundamental frequencies of the Jupiter-Saturn system, (ii) crossing of secondary resonances, and (iii) the apsidal corotation of Jupiter and Saturn after the 2:1 MMR crossing. Removal occurs before and after the 2:1 MMR but, surprisingly, very little inside this resonance where there are large areas of stability for Trojan orbits. When these sources of instability disappear, towards the end of the planetary migration, the temporary population of Trojans becomes permanently trapped.
Marzari Francesco
Scholl Hans
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