Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...75..479r&link_type=abstract
Icarus (ISSN 0019-1035), vol. 75, Sept. 1988, p. 479-484.
Astronomy and Astrophysics
Astronomy
7
Circular Orbits, Density Distribution, Mimas, Astronomical Models, Hydrostatics, Voyager Project
Scientific paper
The observed triaxial ellipsoid shape of Mimas, in conjunction with a mean density of 1137 kg/cu cm, is presently used as the basis of hydrostatic equilibrium and nonhydrostatic models of internal structure whose outer layers are sufficiently strong to support part of the tidal load. Such plausible internal structures are consistent with the shape and density constraints as (1) a two-layer model in hydrostatic equilibrium, (2) a hydrostatic model with four layers of equal depth, and (3) a nonhydrostatic constant-density model with an elastic lithosphere; these models admit either homogeneous or heterogeneous accretion, as well as either a cold thermal history or melting and differentiation.
Ross Martin N.
Schubert Gerald
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