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S Ori 70: Just a Foreground Field Brown Dwarf?
Adam J. Burgasser, J. Davy Kirkpatrick, Mark R. McGovern +3
We examine recent claims that the T-type brown dwarf S Ori 053810.1-023626 (S Ori 70) is a spectroscopically verified low mass (3 M) member of the 1--8 Myr …
The 2MASS Wide-Field T Dwarf Search. II. Discovery of Three T Dwarfs in the Southern Hemisphere
Adam J. Burgasser, Michael W. McElwain, J. Davy Kirkpatrick
We present the discovery of three new Southern Hemisphere T dwarfs identified in the Two Micron All Sky Survey. These objects, 2MASS 0348-6022, 2MASS 0516-0445, and 2MASS 2228-4310…
Infrared Parallaxes for Methane T dwarfs
C. G. Tinney, Adam J. Burgasser, J. Davy. Kirkpatrick
We report final results from our 2.5 year infrared parallax program carried out with the European Southern Observatory 3.5m New Technology Telescope and the SOFI infrared camera. O…