Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

K. L. Luhman, James Liebert, G. H. Rieke

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Abstract

We present observations of a young (∼3-10 Myr old) brown dwarf within the ρ Ophiuchi star-forming region. A low-resolution optical spectrum exhibits a spectral type of M8.5 ± 0.5 and strong Hα emission (Wλ ∼ 60 Å). After demonstrating the youth of this source through several additional lines of evidence, we place it on the H-R diagram and use the latest evolutionary tracks to derive a substellar mass of 0.01-0.06 M. A more accurate mass estimate will require tests of the evolutionary tracks and temperature scales at such young ages and late types.

Original languageEnglish (US)
Pages (from-to)L165-L168
JournalAstrophysical Journal
Volume489
Issue number2 PART II
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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