6 papers · 1 filter
HST/ACS Coronagraphic Imaging of the AU Microscopii Debris Disk
John E. Krist, D. R. Ardila, D. A. Golimowski +5
We present {\it Hubble Space Telescope} Advanced Camera for Surveys multicolor coronagraphic images of the recently discovered edge-on debris disk around the nearby ( pc) M…
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…
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…
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…