DISCOVERY OF AN UNUSUALLY BLUE L DWARF WITHIN 10 pc OF THE SUN
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Author(s)
Schmidt, Sarah J.
Burgasser, Adam J.
Bochanski, John J.
Hawley, Suzanne L.
West, A. A.
Date Issued
February 2010
Journal
Astronomical Journal
Publisher
American Astronomical Society
Citation
Schmidt, Sarah J. et al. "Discovery of an unusually blue L dwarf within 10 pc of the sun." 2010 The Astronomical Journal 139:3, p.1045–1050. ©2010 The American Astronomical Society.
Version
Author's final manuscript
Abstract
We report the discovery of an unusually blue L5 dwarf within 10 pc of the Sun from a search of Sloan Digital Sky
Survey (SDSS) spectra. A spectrophotometric distance estimate of 8.0±1.6 pc places SDSS J141624.08+134826.7
among the six closest known L dwarfs. SDSS 1416+13 was overlooked in infrared color-based searches because
of its unusually blue J − KS color, which also identifies it as the nearest member of the blue L dwarf subclass. We present additional infrared and optical spectroscopy from the IRTF/SpeX and Magellan/MagE spectrographs and
determine UVW motions that indicate thin disk kinematics. The inclusion of SDSS 1416+13 in the 20 pc sample
of L dwarfs increases the number of L5 dwarfs by 20% suggesting that the L dwarf luminosity function may be far
from complete.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.1088/0004-6256/139/3/1045
