On a ring origin of the equatorial ridge of Iapetus
Article first published online: 29 AUG 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 16, August 2006
How to Cite
2006), On a ring origin of the equatorial ridge of Iapetus, Geophys. Res. Lett., 33, L16203, doi:10.1029/2005GL025386.(
- Issue published online: 29 AUG 2006
- Article first published online: 29 AUG 2006
- Manuscript Accepted: 20 JUL 2006
- Manuscript Revised: 30 MAY 2006
- Manuscript Received: 2 DEC 2005
 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.