Internal structure and bulk chemical composition of Io: a pre-Galileo prediction

Details Internal structure and bulk chemical composition of Io: a pre-Galileo prediction Internal structure and bulk chemical composition of Io: a pre-Galileo prediction

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phla..213..253p&link_type=abstract

Physics Letters A, v. 213, p. 253-258.

Physics

5

Elsevier: Galilean Satellites, Bulk Chemical Composition, Liquid Fes, Galileo Orbiter Prediction, Pacs, 96.35.Cp, 96.35.Er

Scientific paper

The close flypast of Jupiter's moon Io by the Galileo Orbiter on December 7, 1995 has provided a rare and important opportunity to test a theoretical model for the origin and bulk chemical composition of this body. The calculations suggest that the inner ~ 25% of Io's mass may consist of molten FeS with dissolved Ni, Co and Cu. This liquid core has a mean density of ~ 4.0 g/cm3. The outer ~ 75% of the satellite's mass consists chiefly of solid silicates of Fe, Mg, and Ca and has a mean density ~ 3.4 g/cm3. As a consequence, the mean axial moment-of-inertia factor of Io is predicted to be 0.390 +/- 0.002.

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