INFRARED SPECTRUM OF THE COOL BROWN DWARF-GL-229B

被引:270
作者
OPPENHEIMER, BR [1 ]
KULKARNI, SR [1 ]
MATTHEWS, K [1 ]
NAKAJIMA, T [1 ]
机构
[1] CALTECH, PALOMAR OBSERV 10524, PASADENA, CA 91125 USA
关键词
D O I
10.1126/science.270.5241.1478
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
Spectroscopic measurements of a cool brown dwarf, Gl 229B, reveal absorption features attributable to methane in the near infrared much like those of Jupiter, These features are not seen in any star. The presence of methane indicates that the surface temperature of Gl 229B is below 1000 kelvin. Features attributed to water vapor also indicate that Gl 229B is much cooler than any known star.
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页码:1478 / 1479
页数:2
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