A study of the process of protoplanetary disk formation

Details A study of the process of protoplanetary disk formation A study of the process of protoplanetary disk formation

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986avest..20..212r&link_type=abstract

Astronomicheskii Vestnik (ISSN 0320-930X), vol. 20, July-Sept. 1986, p. 212-227. In Russian.

Computer Science

Sound

7

Accretion Disks, Gravitational Collapse, Planetary Evolution, Protoplanets, Solar System, Asteroids, Meteoritic Composition

Scientific paper

The formation of a disk at the accretion stage of solar nebula compression with a mass equal to 1.1 solar masses and an angular momentum equal to 2 x 10 to the 52nd g sq cm/sec is modeled. Allowance is made for the accretion of material onto the disk. Equations describing the evolution of the disk are solved in the approximation of a thin disk for values integrated along the vertical. It is shown that, during moderate presound accretion, where v is less than approximately (0.3-1) x 10 to the 16th sq cm/s, the disk radius expanded from approximately less than 0.3 to the present-day size of the solar system. Accretion onto the disk leads to an increase in the mass of the disk and its weak dependence on the boundary condition at the core; moreover, it causes a change in the direction of mass flow in the disk during a shift from the core to the boundary.

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