Dynamical Evolution of Protoplanetary Disks

Details Dynamical Evolution of Protoplanetary Disks Dynamical Evolution of Protoplanetary Disks

2000-10-02

arxiv.org/abs/astro-ph/0010036v1

Astronomy and Astrophysics

Astrophysics

24 pages with 6 figures; to appear in the Proceedings of Galactic Structure, Stars, and the Interstellar Medium, a NASA Legacy

Scientific paper

This paper reviews the theory of protostellar debris disks. After a brief introduction to accretion disk physics, I describe coagulation models of planet formation in the outer regions of planetesimal disks. Coagulation models for the Kuiper Belt produce Pluto-sized objects on timescales of 10-40 Myr. These models yield size distributions which agree with observations of Kuiper Belt objects with red magnitudes, R = 20-27. Velocity stirring models for other debris disk systems demonstrate that 500 km or larger objects can stir the velocities of small objects up to the shattering limit needed to begin a collisional cascade.

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