Computer Science
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...96..107i&link_type=abstract
Icarus (ISSN 0019-1035), vol. 96, March 1992, p. 107-120.
Computer Science
79
Computerized Simulation, Gravitational Effects, Many Body Problem, Protoplanets, Normal Density Functions, Solar Gravitation, Three Dimensional Models
Scientific paper
The distribution of eccentricities (e) and inclinations (i) of planetesimals in a planetesimal swarm was investigated using 3D N-body simulations and assuming that the e and the i magnitudes of the planetesimals are determined by perturbation between themselves. It is found that the e,i-distribution of identical 400 nonaccreting equal-mass bodies is expressed with high accuracy by Gaussian distribution. Theoretical arguments are presented showing that the dynamical friction under the Gaussian distribution is strong enough to depress the e and i magnitudes of a protoplanet to values satisfying the energy equipartition with those of planetesimals. This result supports the existence of runaway growth.
Ida Shigeru
Makino Junichiro
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