Effect of Jovian Planets on the Stability of Terrestrial Protoplanet Systems

Details Effect of Jovian Planets on the Stability of Terrestrial Protoplanet Systems Effect of Jovian Planets on the Stability of Terrestrial Protoplanet Systems

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..409i&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

Physics

Scientific paper

Dynamical characters of terrestrial protoplanet systems have been investigated. Diagrams which show the instability timescale of terrestrial protoplanet systems as a function of protoplanet separation (we call them CWB diagrams) are analyzed and interpreted. We make CWB diagrams for several different initial parameters, mainly under perturbations from Jupiter and Saturn. One-peakedness of the diagrams for small random velocity cases is interpreted from the viewpoint of orbital alignment in protoplanets. The orbital alignment serves as a stabilizer of the protoplanet system by preventing particles from making close encounters. Terrestrial protoplanet systems appear most stable where tidal force by perturbers and mutual gravitational interaction among particles balance; in such cases, the orbital alignment is realized.

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