Discovery of Two Nearby, Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Metal-Rich?

  title={Discovery of Two Nearby, Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Metal-Rich?},
  author={D. Looper and J. Kirkpatrick and R. Cutri and T. Barman and A. Burgasser and Michael C. Cushing and T. Roellig and M. McGovern and I. Mclean and E. Rice and B. Swift and S. D. Schurr},
  journal={The Astrophysical Journal},
  • D. Looper, J. Kirkpatrick, +9 authors S. D. Schurr
  • Published 2008
  • Physics
  • The Astrophysical Journal
  • We present the discovery of two nearby L dwarfs from our 2MASS proper-motion search, which uses multiepoch 2MASS observations covering ~4700 deg^2 of sky. 2MASS J18212815+1414010 and 2MASS J21481628+4003593 were overlooked by earlier surveys due to their faint optical magnitudes and their proximity to the Galactic plane (10° ≤ | b | ≤ 15°). Assuming that both dwarfs are single, we derive spectrophotometric distances of ~10 pc, thus increasing the number of known L dwarfs within 10 pc to 10. In… CONTINUE READING
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    • 148
    • PDF
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    • 190
    • Highly Influenced
    • PDF
    The Brown Dwarf Kinematics Project (BDKP. III. Parallaxes for 70 Ultracool Dwarfs
    • 165
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    Publications referenced by this paper.
    The Two Micron All Sky Survey (2MASS)
    • 6,821
    • PDF
    Four Nearby L Dwarfs
    • 138
    • PDF
    Meeting the Cool Neighbors. IX. The Luminosity Function of M7-L8 Ultracool Dwarfs in the Field
    • 219
    • PDF
    Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574
    • 167
    • PDF
    67 Additional L Dwarfs Discovered by the Two Micron All Sky Survey
    • 453
    • PDF
    The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics
    • 129
    • PDF