Composition and physical properties of Enceladus' surface

被引：180

作者：

Brown, RH ^{[1
]}

Clark, RN

Buratti, BJ

Cruikshank, DP

Barnes, JW

Mastrapa, RME

Bauer, J

Newman, S

Momary, T

Baines, KH

Bellucci, G

Capaccioni, F

Cerroni, P

Combes, M

Coradini, A

Drossart, P

Formisano, V

Jaumann, R

Langevin, Y

Matson, DL

McCord, TB

Nelson, RM

Nicholson, PD

Sicardy, B

Sotin, C

机构：

[1] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[2] US Geol Survey, Denver, CO 80225 USA

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[4] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[5] Inst Fis Spazio Interplanetario, I-0133 Rome, Italy

[6] Ist Astrofis Spaziale, I-0133 Rome, Italy

[7] Observ Paris, F-92195 Meudon, France

[8] Deutsch Zentrum Luft & Raumfahrt, D-12489 Berlin, Germany

[9] Univ Paris, Inst Astrophys Spatiale, F-91405 Orsay, France

[10] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA

[11] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[12] Univ Nantes, F-44072 Nantes, France

来源：

SCIENCE | 2006年 / 311卷 / 5766期

关键词：

D O I：

10.1126/science.1121031

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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, CO2, and amorphous and crystalline water ice, particularly in the region dubbed the "tiger stripes." 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.

引用

页码：1425 / 1428

页数：4

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