Origin of the Jovian ring and the Galilean satellites

Details Origin of the Jovian ring and the Galilean satellites Origin of the Jovian ring and the Galilean satellites

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280..300p&link_type=abstract

Nature, vol. 280, July 26, 1979, p. 300-302.

Physics

13

Galilean Satellites, Jupiter (Planet), Planetary Evolution, Ring Structures, Amalthea, Ice, Interplanetary Gas, Protoplanets, Jupiter, Satellites, Voyager 1, Rings, Io, Europa, Ganymede, Callisto, Amalthea, Planets, Condensation, Cosmic Dust, Laplace Hypothesis, Origin, Chemical Composition, Rock, Water, Ice, Models, Observations, Gases, Photosphere, Silicates, Triolite, Iron Oxide, Sulfur, Temperature, Pressure, Particles, Spectrum

Scientific paper

It is suggested that both the rocky ring of Jupiter and the Galilean satellites formed from the condensation of a gaseous disk shed by the rotating gaseous envelope that contracted to form the planet. A supersonic turbulent stress arising form the motions of overshooting convective elements within the gaseous envelope of the developing planet is proposed to lead to the central condensation of the envelope together with the appearance of a very dense shell of nonturbulent gas at the surface of the cloud, which evolves into a belt-like structure at the equator as the cloud contracts. The process is considered to repeat itself at each step in the sequence of orbital radii. Calculations of the physical properties of the Galilean satellites based on this model are presented and the processes leading to the formation of the observed ring at two Jupiter radii and a predicted ring at four Jupiter radii are discussed.

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