Formation of the Planetary Sequence in a Highly Flattened Disk of Frequently Colliding Planetesimals

2000/12/05 by Evgeny Griv, Griv, Evgeny, Michael Gedalin +8
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astro and Planetary Science #High-pressure geophysics and materials #Material Science and Thermodynamics #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0012101

3 pages, 1 figure, presented by E. Griv at the IAU Symp. 202, Manchester, UK, 2000

arxiv created 2000/12/05 · arxiv updated 2009/12/01

Abstract

The kinetic theory is used to study the evolution of the self-gravitating disk of planetesimals. The effects of frequent collisions between planetesimals are taken into account by using a Krook integral in the Boltzmann kinetic equation. It is shown that as a result of an aperiodic collision-dissipative instability of small gravity disturbances the disk is subdivided into numerous dense fragments. These can eventually condense into the planetary sequence.

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