Composition and Physical Properties of Enceladus' Surface-Reference-Cited by-同舟云学术

Composition and Physical Properties of Enceladus' Surface

Published:2006-03-10 Issue:5766 Volume:311 Page:1425-1428
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Brown Robert H.¹²³⁴⁵,Clark Roger N.¹²³⁴⁵,Buratti Bonnie J.¹²³⁴⁵,Cruikshank Dale P.¹²³⁴⁵,Barnes Jason W.¹²³⁴⁵,Mastrapa Rachel M. E.¹²³⁴⁵,Bauer J.¹²³⁴⁵,Newman S.¹²³⁴⁵,Momary T.¹²³⁴⁵,Baines K. H.¹²³⁴⁵,Bellucci G.¹²³⁴⁵,Capaccioni F.¹²³⁴⁵,Cerroni P.¹²³⁴⁵,Combes M.¹²³⁴⁵,Coradini A.¹²³⁴⁵,Drossart P.¹²³⁴⁵,Formisano V.¹²³⁴⁵,Jaumann R.¹²³⁴⁵,Langevin Y.¹²³⁴⁵,Matson D. L.¹²³⁴⁵,McCord T. B.¹²³⁴⁵,Nelson R. M.¹²³⁴⁵,Nicholson P. D.¹²³⁴⁵,Sicardy B.¹²³⁴⁵,Sotin C.¹²³⁴⁵

Affiliation:

1. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA.

2. U.S. Geological Survey, Denver, CO 80225, USA.

3. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.

4. NASA Ames Research Center, Moffett Field, CA 94035, USA.

5. Instituto di Fisica dello Spazio Interplanetario, 0133 Rome, Italy.

Abstract

Observations of Saturn's satellite Enceladus using Cassini's Visual and Infrared Mapping Spectrometer instrument were obtained during three flybys of Enceladus in 2005. Enceladus' surface is composed mostly of nearly pure water ice except near its south pole, where there are light organics, CO 2 , and amorphous and crystalline water ice, particularly in the region dubbed the âtiger stripes.â An upper limit of 5 precipitable nanometers is derived for CO in the atmospheric column above Enceladus, and 2% for NH 3 in global surface deposits. Upper limits of 140 kelvin (for a filled pixel) are derived for the temperatures in the tiger stripes.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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