@article{ff4cd8326c964175934bea2a28187658,
title = "The onset of methane in l dwarfs",
abstract = "We have detected weak absorption features produced by the strong n3 methane band at 3.3 mm in two L dwarfs, 2MASSW J15074762162738 and 2MASSI J0825196±211552, classified as spectral types L5 and L7.5, respectively. These absorptions occur in objects warmer than any in which methane previously has been detected and mark the first appearance of methane in the ultracool star-to-brown dwarf spectral sequence.",
keywords = "Brown dwarfs, Infrared, Low-mass, Stars-radiative transfer-stars",
author = "Noll, {Keith S.} and Geballe, {T. R.} and Leggett, {S. K.} and Marley, {Mark S.}",
note = "Funding Information: We thank R. Freedman for help with access to high-temperature line lists for water and methane. We also wish to thank the staff of the United Kingdom Infrared Telescope, which is operated by the Joint Astronomy Centre on behalf of the UK Particle Physics and Research Council. This work was supported by NASA grant NAG5-8314 to K. S. N. at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy under NASA contract NAS5-26555, by a National Research Council Senior Resident Research Associateship at the Marshall Space Flight Center (K. S. N.), and by NSF CAREER grant AST 96-24878 to M. S. M. Publisher Copyright: {\textcopyright} 2000. The American Astronomical Society. All rights reserved.",
year = "2000",
month = oct,
day = "1",
doi = "10.1086/428572",
language = "English (US)",
volume = "541",
pages = "L5--L8",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd.",
number = "2",
}