Near-infrared spectroscopy of centaurs and irregular satellites

被引：69

作者：

Brown, ME ^{[1
]}

机构：

[1] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

来源：

ASTRONOMICAL JOURNAL | 2000年 / 119卷 / 02期

关键词：

Kuiper belt; Oort cloud; minor planets; asteroids; planets and satellites : individual (Elara; Himalia; Nereid; Pasaphae; Phoebe);

D O I：

10.1086/301202

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained near-infrared spectra of the four brightest known Centaurs and of five irregular satellites of giant planets. Many of these objects show 1.5 and 2.0 mu m absorption bands indicative of water ice, including 1997 CU(26), Pholus, Phoebe (S9), and Nereid (N2). The satellites of Jupiter-Elara, Himalia, and Pasaphae (J6, J7, J8)-appear spectrally featureless, consistent with asteroidal origins for these bodies. Phoebe's surface water ice indicates that it formed as an icy planetesimal rather than as an asteroid.

引用

页码：977 / 983

页数：7

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