The effects of a resisting medium on protoplanetary orbits

Details The effects of a resisting medium on protoplanetary orbits The effects of a resisting medium on protoplanetary orbits

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.180..281d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 180, Aug. 1977, p. 281-288. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

8

Astronomical Models, Friction Factor, Planetary Evolution, Solar Orbits, Solar System, Celestial Mechanics, Cosmology, Equations Of Motion, Nebulae, Roche Limit

Scientific paper

The equation of motion of a body in orbit about a central star emitting a radially moving stream of gas is obtained on the assumption that all the gas hitting the body is accreted by it. Exact analytical solutions are found for the case where the body has a constant radius. The variations in the orbital parameters are discussed, and the results applied to protoplanets of the type envisaged by McCrea's (1960) floccule theory. It is shown that protoplanets originally close to the Asteroid Belt and hence outside the Roche limit are affected in such a way that they move through this limit and have their gaseous envelopes tidally disrupted. In this way an explanation for the composition of the terrestrial planets is offered.

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