Discovery of the Coolest Extreme Subdwarf

@article{Burgasser2006DiscoveryOT,
  title={Discovery of the Coolest Extreme Subdwarf},
  author={A. Burgasser and J. Kirkpatrick},
  journal={The Astrophysical Journal},
  year={2006},
  volume={645},
  pages={1485-1497}
}
  • A. Burgasser, J. Kirkpatrick
  • Published 2006
  • Physics
  • The Astrophysical Journal
  • We report the discovery of LEHPM 2-59 as the coolest extreme M subdwarf (esdM) found to date. Optical and near-infrared spectroscopy demonstrate that this source is of later spectral type than the esdM7 APMPM J0559-2903, with the presence of strong alkali lines (including Rb I), VO absorption at 7400 ?, and H2O absorption at 1.4 ?m. Current optical classification schemes yield a spectral type of esdM8, making LEHPM 2-59 one of only two ultracool esdMs known. The substantial space velocity of… CONTINUE READING
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    References

    SHOWING 1-10 OF 99 REFERENCES
    Discovery of a Second L Subdwarf in the Two Micron All Sky Survey
    • 73
    • PDF
    THE FIRST HIGH-RESOLUTION SPECTRA OF 1.3 L SUBDWARFS
    • 38
    • PDF
    The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics
    • 132
    • PDF
    The Schizophrenic Spectrum of LSR 1610−0040: A Peculiar M Dwarf/Subdwarf
    • 27
    • Highly Influential
    • PDF
    Extreme subdwarfs. I. Molecular band strengths: a theoretical approach.
    • 15
    Spectral Energy Distributions for Disk and Halo M Dwarfs
    • 157
    • Highly Influential
    • PDF