5 papers
Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: the Effects of Clouds, Gravity, and Effective Temperature
D. A. Golimowski, S. K. Leggett, M. S. Marley +2
We present new JHKL'M' photometry on the MKO system for a large sample of L and T dwarfs identified from SDSS and 2MASS and classified according to the scheme of Geballe et al. (20…
Spectral Classification Beyond M
S. K. Leggett, F. Allard, A. J. Burgasser +3
Significant populations of field L and T dwarfs are now known, and we anticipate the discovery of even cooler dwarfs by Spitzer and ground-based infrared surveys. However, as the n…
Infrared Colors of L and T Dwarfs
S. K. Leggett, D. A. Golimowski, X. Fan +2
We discuss the behaviour of the JHKL'M' colors of L and T dwarfs, based on photometric and spectroscopic data obtained at the United Kingdom Infrared Telescope in Hawaii. We have m…
Infrared Classification of L and T Dwarfs
T. R. Geballe, G. R. Knapp, S. K. Leggett +2
We use new and published medium resolution 0.6--2.5 m spectra of L and T dwarfs to develop a unified classification system for both of these new spectral classes. Two indices of…
Infrared Spectroscopy of Brown Dwarfs: the onset of methane absorption in L dwarfs and the L/T transition
T. R. Geballe, K. S. Noll, S. K. Leggett +3
We present infrared spectra of brown dwarfs with spectral types from mid-L to T. The 0.9-2.5 m spectra of three dwarfs found by the Sloan Digital Sky Survey contain absorption b…