On a ring origin of the equatorial ridge of Iapetus

Details On a ring origin of the equatorial ridge of Iapetus On a ring origin of the equatorial ridge of Iapetus

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3316203i&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 16, CiteID L16203

Physics

15

Planetary Sciences: Solar System Objects: Saturnian Satellites, Planetary Sciences: Solid Surface Planets: Rings And Dust, Planetary Sciences: Fluid Planets: Orbital And Rotational Dynamics (1221), Planetary Sciences: Comets And Small Bodies: Interactions With Solar Wind Plasma And Fields

Scientific paper

Most recent Cassini observations by the Imaging Science Subsystem (ISS) showed that the third largest Saturnian satellite, Iapetus, has a curious ridge system exactly aligned with its equator [Porco et al., 2005]. Because Iapetus has a large Hill sphere for the trapping of circum-satellitary material, a ring system might have been present during its formation. A scenario is proposed to describe how the equatorial ridge system could have been produced by the collisional accretion of a ring remnant subsequent to the formation of the proto-Iapetus.

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