Oligarchic Growth of Protoplanets

Details Oligarchic Growth of Protoplanets Oligarchic Growth of Protoplanets

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..683k&link_type=abstract

Lunar and Planetary Science, volume 27, page 683

Physics

1

Accretion: Planetary, Planetesimals, Protoplanets, Simulations: N-Body, Simulations: Numerical

Scientific paper

We have investigated late stage of planetary accretion using 3-D N-body simulations. We found that in late stage a group of protoplanets (runaway planetesimals or embryos) with similar masses grows oligarchically, while most planetesimals remain small. We also found that the protoplanets are on nearly circular orbits and their separations are roughly constant. Their typical orbital separation is ~10r(sub)H, where r(sub)H is the Hill radius defined by r(sub)H = (M/3 solar masses)^1/3a where M and a are the mass and the semimajor axis of a protoplanet.

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