Modeling Accretion in the Region of Terrestrial Planets

Details Modeling Accretion in the Region of Terrestrial Planets Modeling Accretion in the Region of Terrestrial Planets

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1401w&link_type=abstract

Lunar and Planetary Science, volume 27, page 1401

Other

Planets: Formation, Terrestrial Planets: Origin

Scientific paper

A realistic model of accretion of planets from a swarm of planetesimals must allow for spatial variations within the swarm. Formation of a large protoplanetary embryo affects the distributions of size and orbital elements of smaller planetesimals in its vicinity, and makes them differ from the average properties of the swarm. This variation is inconsistent with the assumption of uniformity implicit in particle-in-a-box simulations. To avoid this problem, we developed a spatially resolved model that treats a hybrid population of planetesimals in a series of heliocentric zones which interact with each other and with discrete large bodies in individual orbits. We have now incorporated a gravitational stirring algorithm with separate evolution of inclinations and eccentricities, and applied this model to a swarm spanning the region of terrestrial planets, 0.5-1.5 AU.

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