Settling of Small Grains in an Extended Protoplanet

Details Settling of Small Grains in an Extended Protoplanet Settling of Small Grains in an Extended Protoplanet

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.2908h&link_type=abstract

American Astronomical Society, DPS meeting #37, #29.08; Bulletin of the American Astronomical Society, Vol. 37, p.675

Astronomy and Astrophysics

Astronomy

Scientific paper

We calculate the rate of sedimentation of grains during the gravitational contraction of a protoplanetary ``clump" in the scenario of Boss (2002). For the first 3x105 years, such a clump contracts slowly and its internal parameters (temperature, density, and pressure) change slowly. We find that during this time silicate grains can sediment to the core if their initial size is larger than about 0.01 cm. If the protoplanet is convective, even smaller grains settle to form a core.

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