Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

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

Research output: Contribution to journalArticle

74 Citations (Scopus)

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)
JournalAstrophysical Journal
Volume489
Issue number2 PART II
StatePublished - 1997

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spectroscopy
temperature scales
optical spectrum
diagram
diagrams
stars
estimates
temperature
young
youth
test

Keywords

  • Stars: formation
  • Stars: low-mass, brown dwarfs
  • Stars: pre-main-sequence

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster. / Luhman, K. L.; Liebert, James; Rieke, George H.

In: Astrophysical Journal, Vol. 489, No. 2 PART II, 1997.

Research output: Contribution to journalArticle

Luhman, K. L. ; Liebert, James ; Rieke, George H. / Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster. In: Astrophysical Journal. 1997 ; Vol. 489, No. 2 PART II.
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AB - 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.

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