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A Keck/HST Survey for Companions to Low-Luminosity Dwarfs
D. W. Koerner, J. Davy Kirkpatrick, I. N. Reid +1
We present preliminary results of an imaging survey for companions to low-luminosity dwarfs with spectral types ranging from M7 to L9. A K-band study with the Near Infrared Camera…
Keck Imaging of Binary L Dwarfs
D. W. Koerner, J. Davy Kirkpatrick, M. W. McElwain +1
We present Keck near-infrared imaging of three binary L dwarf systems, all of which are likely to be sub-stellar. Two are lithium dwarfs, and a third exhibits an L7 spectral type,…
Four nearby L dwarfs
I. Neill Reid, J. Davy Kirkpatrick, J. E. Gizis +5
We present spectroscopic, photometric and astrometric observations of four bright L dwarfs identified in the course of the 2MASS near-infrared survey. Our spectroscopic data extend…
L Dwarfs Found in Sloan Digital Sky Survey Commissioning Imaging Data
SDSS Collaboration, Xiaohui Fan
This paper describes the discovery of seven dwarf objects of spectral type `L' (objects cooler than the latest M dwarfs) in commissioning imaging data taken by the Sloan Digital Sk…
Two nearby M dwarf binaries from 2MASS
J. E. Gizis, D. G. Monet, I. N. Reid +2
We report the discovery of two binary M dwarf systems in the immediate solar neighborhood using 2MASS. The first is an M6.5 companion to the nearby G star HD 86728 (Gl 376). The kn…
Discovery of Four Field Methane (T-type) Dwarfs with 2MASS
A. J. Burgasser, J. D. Kirkpatrick, M. E. Brown +8
We report the discovery of four field methane (T-type) brown dwarfs using 2MASS survey data. One additional methane dwarf, previously discovered by SDSS, was also identified. Near-…