Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574

  title={Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574},
  author={J. Davy Kirkpatrick and Travis S. Barman and Adam J. Burgasser and Mark R. McGovern and Ian S. McLean and C. G. Tinney and Patrick J. Lowrance},
  journal={The Astrophysical Journal},
While following up L dwarf candidates selected photometrically from the Two Micron All Sky Survey, we uncovered an unusual object designated 2MASS J01415823-4633574. Its optical spectrum exhibits very strong bands of vanadium oxide but abnormally weak absorptions by titanium oxide, potassium, and sodium. Morphologically, such spectroscopic characteristics fall intermediate between old field early-L dwarfs [log(g) ≈ 5] and very late M giants [log(g) ≈ 0], leading us to favor low gravity as the… 
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