Cometary dynamics: migration due to gas drag and scattering by protoplanets

Details Cometary dynamics: migration due to gas drag and scattering by protoplanets Cometary dynamics: migration due to gas drag and scattering by protoplanets

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..453h&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Physics

1

Comets: Orbital Evolution, Planetesimals

Scientific paper

We investigate the orbital evolution of planetesimals due to gas drag and scattering by protoplanets from a point of view of the comet cloud formation. Gas drag by the gas disk causes planetesimals to spiral inward to the Sun. On the inward migration, planetesimals encounter protoplanets. Planetesimals which are not captured into the mean motion resonances of protoplanets or escape from them approach protoplanets and are often largely scattered by the protoplanets. Planetesimals whose aphelion distances become larger by protoplanet scattering are the candidates for members of the comet cloud. We demonstrate the above basic processes of planetesimal dynamics by numerical integration of planetesimal orbits.

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