Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..66..319w&link_type=abstract
Astrophysics and Space Science, vol. 66, no. 2, Dec. 1979, p. 319-324.
Astronomy and Astrophysics
Astrophysics
1
Angular Momentum, Mass Transfer, Planetary Evolution, Planetary Mass, Planetary Rotation, Protoplanets, Astronomical Models, Evaporation, Gas Giant Planets, Hydrodynamics, Planetary Composition, Spin
Scientific paper
It is noted that a current line of thought concerning the formation of the planetary system suggests the existence of giant gaseous protoplanets with mass and composition similar to the present day Jupiter, though with a much larger radius and consequently lower density. It is therefore shown to be feasible that all the planets could have originated from similar giant gaseous protoplanets and that their present composition and mass is explainable in terms of mass loss. However, the various planets differ from each other in one other noticeable effect, their spin angular momentum. In the present paper the hypothesis is advanced that originally the protoplanets had similar spin angular momentum as well as similar mass and composition. Also it is shown that mass loss, which gave rise to the observed masses and composition, can also account for the change in spin angular momentum to the observed relationship.
Bhattacharjee S. K.
Williams Iwan P.
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