The Near-infrared Spectrum of the Brown Dwarf Gliese 229B

Details The Near-infrared Spectrum of the Brown Dwarf Gliese 229B The Near-infrared Spectrum of the Brown Dwarf Gliese 229B

1996-06-10

arxiv.org/abs/astro-ph/9606056v1

Astronomy and Astrophysics

Astrophysics

LateX, 12 pages. Five postscript figures, available via ftp://ftp.jach.hawaii.edu/pub/ukirt/ftp/trg/gl229b, get fig1.ps, etc

Scientific paper

10.1086/310203

A medium resolution 1.0-2.5um spectrum of the brown dwarf, Gliese 229B has been obtained using CGS4 on UKIRT. In addition to the broad spectral structure seen in earlier low resolution observations, the new spectrum reveals a large number of absorption lines, many of which can be identified with water vapor. Water and methane are both shown to be strong absorbers in the near-infrared spectrum of the object. Several spectral features in Gl 229B that are attributable to methane match ones seen in reflection in the giant outer planets and, in particular, Titan.

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