The Properties of the 500 K Dwarf UGPS J 072227 . 51 − 054031 . 2 , and a Study of the Far-Red Flux of Cold Brown Dwarfs

@inproceedings{Leggett2012ThePO,
  title={The Properties of the 500 K Dwarf UGPS J 072227 . 51 − 054031 . 2 , and a Study of the Far-Red Flux of Cold Brown Dwarfs},
  author={Sandy K. Leggett and Didier Saumon and M S Marley and Katharina Lodders and James Canty and Philip W. Lucas and Richard L. Smart and Christopher G. Tinney and Derek Homeier and France Allard and B. Burningham and Avril C. Day-Jones and Bruce Fegley and Miki Ishii and Hugh R. A. Jones and F. Marocco and D. J. Pinfield and Motohide Tamura},
  year={2012}
}
We present i and z photometry for 25 T dwarfs and one L dwarf. Combined with published photometry, the data show that the i − z, z − Y and z − J colors of T dwarfs are very red, and continue to increase through to the late-type T dwarfs, with a hint of a saturation for the latest types with Teff ≈ 600 K. We present new 0.7 – 1.0 μm and 2.8 – 4.2 μm spectra for the very late-type T dwarf UGPS J072227.51−054031.2, as well as improved astrometry for this dwarf. Examination of the spectral energy… CONTINUE READING