The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics

@article{Burgasser2003TheFS,
  title={The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics},
  author={A. Burgasser and J. Kirkpatrick and A. Burrows and J. Liebert and I. Reid and J. Gizis and M. McGovern and L. Prato and I. Mclean},
  journal={The Astrophysical Journal},
  year={2003},
  volume={592},
  pages={1186-1192}
}
  • A. Burgasser, J. Kirkpatrick, +6 authors I. Mclean
  • Published 2003
  • Physics
  • The Astrophysical Journal
  • We present the discovery of the first L-type subdwarf, 2MASS J05325346+8246465. This object exhibits enhanced collision-induced H2 absorption, resulting in blue near-infrared (NIR) colors (J-Ks = 0.26 ± 0.16). In addition, strong hydride bands in the red optical and NIR, weak TiO absorption, and an optical/J-band spectral morphology similar to the L7 DENIS 0205-1159AB imply a cool, metal-deficient atmosphere. We find that 2MASS 0532+8246 has both a high proper motion, μ = 260 ± 015 yr-1, and a… CONTINUE READING
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