Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...375l..31c&link_type=abstract
Astronomy and Astrophysics, v.375, p.L31-L34 (2001)
Astronomy and Astrophysics
Astrophysics
4
Solar System Formation, Planetesimals, Giant-Planet Formation, Asteroid Belt, Collisions
Scientific paper
Recent works have shown that in a disc of planetesimals perturbed by a proto-Jupiter, the coupling between embryo's perturbations and inelastic collisions heats up the disc over several astronomical units in a few 105 years. Using a simulation of a disc made of hard-spheres suffering inelastic collisions, we performed long-term numerical integrations to determine if the energy dissipated in collisions may finally damp eccentricities and inclinations induced by the proto-Jupiter. It is shown that the coupling between mean-motion resonances and collisions induces different damping regimes as a function of the protoplanet's mass. A 15 Moplus proto-Jupiter is more efficient than a 300 Moplus one to stir the disc over longer timescales, due to the non-emptying of isolated first order mean-motion resonances.
Brahic Andre
Charnoz Sebastien
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