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New Constraints on the Composition of Jupiter from Galileo Measurements and Interior Models

Authors
Journal
Icarus
0019-1035
Publisher
Elsevier
Publication Date
Volume
130
Issue
2
Identifiers
DOI: 10.1006/icar.1997.5812

Abstract

Abstract Using the helium abundance measured by Galileo in the atmosphere of Jupiter and interior models reproducing the observed external gravitational field, we derive new constraints on the composition and structure of the planet. We conclude that, except for helium which must be more abundant in the metallic interior than in the molecular envelope, Jupiter could be homogeneous (no core) or could have a central dense core up to 12 M ⊕. The mass fraction of heavy elements is less than 7.5 times the solar value in the metallic envelope and between 1 and 7.2 times solar in the molecular envelope. The total amount of elements other than hydrogen and helium in the planet is between 11 and 45 M ⊕.

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