The discovery of a very cool, very nearby brown dwarf in the Galactic plane

@article{Lucas2010TheDO,
  title={The discovery of a very cool, very nearby brown dwarf in the Galactic plane},
  author={Philip W. Lucas and Christopher G. Tinney and Ben Burningham and Sandy K. Leggett and David J. Pinfield and Richard L. Smart and Hugh R. A. Jones and Federico Marocco and Robert J. Barber and Sergei N. Yurchenko and Jonathan Tennyson and Miki Ishii and Motohide Tamura and Avril C. Day-Jones and A J Adamson and France Allard and Derek Homeier . University of Hertfordshire and University of New South Wales and Gemini Observatory and Osservatorio astronomico di Torino and University College London and Tech. U. Dresden and Subaru Telescope and National Astronomical Observatory Japan and Universidad Catolica de Chile and Joint Astronomy Centre and Universit́e de Lyon and Institut fur Astrophysik Gottingen},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2010},
  volume={408}
}
We report the discovery of a very cool, isolated brown dwarf, UGPS 0722-05, with the United Kingdom Infrared Telescope Deep Sky Survey (UKIDSS) Galactic Plane Survey. The near-infrared spectrum displays deeper H2O and CH4 troughs than the coolest known T dwarfs and an unidentified absorption feature at 1.275 mu m. We provisionally classify the object as a T10 dwarf but note that it may in future come to be regarded as the first example of a new spectral type. The distance is measured by… 

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