Cassini Imaging Science: Initial Results on Phoebe and Iapetus-Reference-Cited by-同舟云学术

Cassini Imaging Science: Initial Results on Phoebe and Iapetus

Published:2005-02-25 Issue:5713 Volume:307 Page:1237-1242
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Porco C. C.¹²³⁴⁵,Baker E.¹²³⁴⁵,Barbara J.¹²³⁴⁵,Beurle K.¹²³⁴⁵,Brahic A.¹²³⁴⁵,Burns J. A.¹²³⁴⁵,Charnoz S.¹²³⁴⁵,Cooper N.¹²³⁴⁵,Dawson D. D.¹²³⁴⁵,Del Genio A. D.¹²³⁴⁵,Denk T.¹²³⁴⁵,Dones L.¹²³⁴⁵,Dyudina U.¹²³⁴⁵,Evans M. W.¹²³⁴⁵,Giese B.¹²³⁴⁵,Grazier K.¹²³⁴⁵,Helfenstein P.¹²³⁴⁵,Ingersoll A. P.¹²³⁴⁵,Jacobson R. A.¹²³⁴⁵,Johnson T. V.¹²³⁴⁵,McEwen A.¹²³⁴⁵,Murray C. D.¹²³⁴⁵,Neukum G.¹²³⁴⁵,Owen W. M.¹²³⁴⁵,Perry J.¹²³⁴⁵,Roatsch T.¹²³⁴⁵,Spitale J.¹²³⁴⁵,Squyres S.¹²³⁴⁵,Thomas P. C.¹²³⁴⁵,Tiscareno M.¹²³⁴⁵,Turtle E.¹²³⁴⁵,Vasavada A. R.¹²³⁴⁵,Veverka J.¹²³⁴⁵,Wagner R.¹²³⁴⁵,West R.¹²³⁴⁵

Affiliation:

1. Cassini Imaging Central Laboratory for Operations, Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA.

2. Goddard Institute for Space Studies, NASA, 2880 Broadway, New York, NY 10025, USA.

3. Astronomy Unit, Queen Mary, University of London, London, E1 4NS, UK.

4. Centre d'Etudes de Saclay, UniversiteÌ of Paris 7, L'Orme des Merisiers, 91191 Gif-sur-Yvette Cedex, France.

5. Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference37 articles.

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