Infrared Spectrum of the Cool Brown Dwarf Gl 229B
- 1 December 1995
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 270 (5241) , 1478-1479
- https://doi.org/10.1126/science.270.5241.1478
Abstract
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.Keywords
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