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The Solar Neighborhood VI: New Southern Stars Identified by Optical Spectroscopy
Todd J. Henry, Lucianne M. Walkowicz, Todd C. Barto +1
Broadband optical spectra are presented for 34 known and candidate nearby stars in the southern sky. Spectral types are determined using a new method that compares the entire spect…
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 Photometry of Late-M, L, and T Dwarfs
S. K. Leggett, D. A. Golimowski, X. Fan +2
We present ZJHKL'M' photometry of a sample of 58 late-M, L, and T dwarfs, most of which are identified from the Sloan Digital Sky Survey and the Two Micron All-Sky Survey. Near-inf…
Towards Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis
T. R. Geballe, G. R. Knapp, S. K. Leggett +2
We present 0.6-2.5um, R~400 spectra of twenty-seven cool, low luminosity stars and substellar objects. Based on these and previously published spectra we develop a preliminary spec…
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…