The formation of Saturn's satellites and rings, as influenced by Saturn's contraction history

Details The formation of Saturn's satellites and rings, as influenced by Saturn's contraction history The formation of Saturn's satellites and rings, as influenced by Saturn's contraction history

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...29...35p&link_type=abstract

Icarus, vol. 29, Sept. 1976, p. 35-48.

Computer Science

20

Ice Formation, Natural Satellites, Planetary Composition, Saturn Rings, Methane, Planetary Evolution, Planetary Mass, Titan

Scientific paper

The paper investigates constraints imposed on the ice content of Saturn's satellites and rings by the planet's high luminosity during the early part of its quasi-equilibrium contraction phase. It is assumed that the addition of ices to the satellites was not completed until after the start of the quasi-equilibrium contraction and that the condensation of ices ceased at the same time within the primordial nebulae of Jupiter and Saturn. Using previously derived limits on the time of condensation cessation for Jupiter's system, the following tentative conclusions are made: (1) Titan is the innermost satellite at whose position a methane-containing ice could condense; (2) water ice could have condensed at the positions of all the satellites; (3) the systematic decrease in the mass of the regular satellites with decreasing distance from the planet may have been caused, in part, by the larger time intervals, for the closer satellites, between the start of contraction and the first condensation of ices at their positions; and (4) ammonia ices, primarily NH4SH, were able to condense at the positions of all but the innermost satellites. It is also shown that water ice could have condensed in the region of the rings near the end of the condensation period.

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