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Long-term evolution of a planetesimal swarm in the vicinity of a protoplanetMany models of planet formation involve scenarios in which one or a few large protoplanets interact with a swarm of much smaller planetesimals. In such scenarios, three-body perturbations by the protoplanet as well as mutual collisions and gravitational interactions between the swarm bodies are important in determining the velocity distribution of the swarm. We are developing a model to examine the effects of these processes on the evolution of a planetesimal swarm. The model consists of a combination of numerical integrations of the gravitational influence of one (or a few) massive protoplanets on swarm bodies together with a statistical treatment of the interactions between the planetesimals. Integrating the planetesimal orbits allows us to take into account effects that are difficult to model analytically or statistically, such as three-body collision cross-sections and resonant perturbations by the protoplanet, while using a statistical treatment for the particle-particle interactions allows us to use a large enough sample to obtain meaningful results.
Document ID
19920001678
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Kary, David M. (State Univ. of New York Stony Brook, NY, United States)
Lissauer, Jack J. (State Univ. of New York Stony Brook, NY, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990
Subject Category
Astrophysics
Accession Number
92N10896
Funding Number(s)
CONTRACT_GRANT: NAGW-1107
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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