The Physical Properties of Four ~600 K T Dwarfs

@article{Leggett2009ThePP,
  title={The Physical Properties of Four ~600 K T Dwarfs},
  author={S. Leggett and M. Cushing and D. Saumon and M. Marley and T. Roellig and S. Warren and B. Burningham and H. Jones and J. Kirkpatrick and N. Lodieu and P. Lucas and A. Mainzer and E. Martin and M. Mccaughrean and D. Pinfield and G. Sloan and R. Smart and M. Tamura and J. Cleve},
  journal={The Astrophysical Journal},
  year={2009},
  volume={695},
  pages={1517-1526}
}
We present Spitzer 7.6-14.5 μm spectra of ULAS J003402.77–005206.7 and ULAS J133553.45+113005.2, two T9 dwarfs with the latest spectral types currently known. We fit synthetic spectra and photometry to the near- through mid-infrared energy distributions of these dwarfs and that of the T8 dwarf 2MASS J09393548–2448279. We also analyze near-infrared data for another T9, CFBD J005910.82–011401.3. We find that the ratio of the mid- to near-infrared fluxes is very sensitive to effective temperature… Expand

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