On a ring origin of the equatorial ridge of Iapetus

W. H. Ip

doi:10.1029/2005GL025386

On a ring origin of the equatorial ridge of Iapetus

W. H. Ip

Graduate Institute of Astronomy

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Abstract

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.

Original language	English
Article number	L16203
Journal	Geophysical Research Letters
Volume	33
Issue number	16
DOIs	https://doi.org/10.1029/2005GL025386
State	Published - 1 Aug 2006

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On a ring origin of the equatorial ridge of Iapetus

Abstract

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