Formation of Protoplanet Systems and Diversity of Planetary Systems

Details Formation of Protoplanet Systems and Diversity of Planetary Systems Formation of Protoplanet Systems and Diversity of Planetary Systems

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...581..666k&link_type=abstract

The Astrophysical Journal, Volume 581, Issue 1, pp. 666-680.

Astronomy and Astrophysics

Astronomy

144

Stars: Planetary Systems, Stars: Planetary Systems: Formation, Solar System: Formation

Scientific paper

We investigate the formation of protoplanet systems from planetesimal disks by global (N=5000 and 10,000 and 0.5AU2. The growth timescale increases with a but decreases with Σ1. Based on the oligarchic growth model and the conventional Jovian planet formation scenario, we discuss the diversity of planetary systems. Jovian planets can form in the disk range where the contraction timescale of planetary atmosphere and the growth timescale of protoplanets (cores) are shorter than the lifetime of the gas disk. We find that for the disk lifetime ~108 yr, several Jovian planets would form from massive disks with Σ1>~30 with Uranian planets outside the Jovian planets. Only terrestrial and Uranian planets would form from light disks with Σ1<~3. Solar system-like planetary systems would form from medium disks with Σ1~=10.

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