HR: 1340h
AN: P33B-0244    [Abstracts]
TI: On A Ring Origin of the Equatorial Ridge of Iapetus
AU: * Ip, W
EM: wingip@astro.ncu.edu.tw
AF: Institute of Astronomy National Central University, 300 Jongdai Road, Chung-Li, 32054 Taiwan
AB: Most recent Cassini observations by the Imaging Science Subsystem Team showed that the third largest Saturnian satellite, Iapetus, has a curious ridge system nearly aligned with its equator. It is proposed that this large-scale geological structure might be related to the collisional accretion of a residual ring system subsequent to the formation of the proto-Iapetus.
DE: 5420 Impact phenomena, cratering (6022, 8136)
DE: 5744 Orbital and rotational dynamics (1221)
DE: 6265 Planetary rings
DE: 6280 Saturnian satellites
SC: Planetary Sciences [P]
MN: Fall Meeting 2005