Surface composition of Kuiper belt object 1993SC

被引:49
作者
Brown, RH
Cruikshank, DP
Pendleton, Y
Veeder, GJ
机构
[1] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721
[2] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035
[3] CALTECH,JET PROP LAB,PASADENA,CA 91109
关键词
D O I
10.1126/science.276.5314.937
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
The 1.42- to 2.40-micrometer spectrum of Kuiper belt object 1993SC was measured at the Keck Observatory in October 1996. It shows a strongly red continuum reflectance and several prominent infrared absorption features. The strongest absorptions in 1993SC's spectrum occur near 1.62, 1.79, 1.95, 2.20, and 2.32 micrometers in wavelength, Features near the same wavelengths in the spectra of Pluto and Neptune's satellite Triton are due to CH4 on their surfaces, suggesting the presence of a simple hydrocarbon ice such as CH4, C2H6, C2H4, or C2H2 on 1993SC. In addition, the red continuum reflectance of 1993SC suggests the presence of more complex hydrocarbons.
引用
收藏
页码:937 / 939
页数:3
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