Cassini Imaging Science: Initial Results on Phoebe and Iapetus
- Creators
- Porco, C. C.
- Dyudina, U.
- Ingersoll, A. P.
Abstract
The Cassini Imaging Science Subsystem acquired high-resolution imaging data on the outer Saturnian moon, Phoebe, during Cassini's close flyby on 11 June 2004 and on Iapetus during a flyby on 31 December 2004. Phoebe has a heavily cratered and ancient surface, shows evidence of ice near the surface, has distinct layering of different materials, and has a mean density that is indicative of an ice-rock mixture. Iapetus's dark leading side (Cassini Regio) is ancient, heavily cratered terrain bisected by an equatorial ridge system that reaches 20 kilometers relief. Local albedo variations within and bordering Cassini Regio suggest mass wasting of ballistically deposited material, the origin of which remains unknown.
Additional Information
© 2005 American Association for the Advancement of Science. 29 November 2004; accepted 12 January 2005. We acknowledge the individuals at CICLOPS and across the Imaging Team who helped in planning and designing the Phoebe and Iapetus sequences and in keeping the imaging operations running smoothly. This paper is dedicated to the memory of Damon Simonelli, who developed much of the pre-Cassini understanding of Phoebe's surface. This work has been funded by NASA/Jet Propulsion Laboratory, the UK Particle Physics and Astronomy Research Council, the German Aerospace Center (DLR), and Université Paris VII Denis Diderot, Commissariat à l'Energie Atomique, Astrophysique Interactions Multiechelles, France.Attached Files
Supplemental Material - Porco_Iapetus_SOM.pdf
Files
Name | Size | Download all |
---|---|---|
md5:2447ab33d0e8f24f2e8f579de253897f
|
200.9 kB | Preview Download |
Additional details
- Eprint ID
- 36635
- DOI
- 10.1126/science.1107981
- Resolver ID
- CaltechAUTHORS:20130128-154223745
- NASA/JPL
- Particle Physics and Astronomy Research Council (PPARC)
- Deutschen Zentrums für Luft- und Raumfahrt (DLR)
- Commissariat à l'Energie Atomique (CEA)
- Created
-
2013-01-29Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences