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astro-ph2001
The Spectra and Classification of L and T Dwarfs
Adam J. Burgasser
In this contribution, I discuss some of the salient features of L and T dwarf spectra in both the red optical (6300--10000 Å) and near-infrared (1--2.5 $\micron$) wavelength regime…
astro-ph2001
The Classification of T Dwarfs
Adam J. Burgasser, J. Davy Kirkpatrick, Michael E. Brown
We discuss methods for classifying T dwarfs based on spectral morphological features and indices. T dwarfs are brown dwarfs which exhibit methane absorption bands at 1.6 and 2.2 $μ…
astro-ph2001
T Dwarf Discoveries by 2MASS
A. J. Burgasser
Over a dozen T dwarfs, brown dwarfs that exhibit methane absorption features at 1.6 and 2.2 $\micron$, have been discovered by the 2MASS survey. We discuss how the search for these…