• DOI:10.1086/504375
Corpus ID: 10911965

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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