Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.1103j&link_type=abstract
American Astronomical Society, DPS meeting #28, #11.03; Bulletin of the American Astronomical Society, Vol. 28, p.1107
Astronomy and Astrophysics
Astronomy
Scientific paper
Runaway growth of planetesimals during the mid-stage of planetary formation is characterized by the rapid growth of a few planetesimals to comparatively large mass in a relatively brief time. A hybrid kinetic theory/N-body simulation to investigate runaway growth has been developed. Previous studies of mid-stage planetary formation are either entirely kinetic theory or N-body. Kinetic theory simulations alone are unable to accurately follow the behavior of a few potential runaways; whereas, pure N-body simulations can accurately follow the evolution of potential runaways, they do not include the interactions with the low mass swarm. The hybrid code statistically simulates the evolution of the smaller bodies in the swarm, and directly follows the larger potential runaways as an N-body calculation. In this way, all of the effects that will determine if runaways are actually produced are accounted for. Results that demonstrate the behavior of a few large bodies in a swarm of planetesimals and preliminary data of a hybrid simulation of mid-stage planetary development are presented.
Alexander S. G.
Jewell Gregory M.
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