Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

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

doi:10.1086/316784

Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

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

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

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 (W_λ ∼ 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 language	English (US)
Pages (from-to)	L165-L168
Journal	Astrophysical Journal
Volume	489
Issue number	2 PART II
DOIs	https://doi.org/10.1086/316784
State	Published - 1997

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/316784

Cite this

@article{15717dc306944b84b807e239dd90a48f,

title = "Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster",

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 {\AA}). 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.",

author = "Luhman, {K. L.} and James Liebert and Rieke, {G. H.}",

note = "Funding Information: We thank J. D. Kirkpatrick for access to his optical spectra of late-type stars. We are grateful to F. Allard, I. Baraffe, and A. Burrows for providing their most recent calculations and useful advice. We also thank A. Grauer for providing the K-band photometry. K. L. and G. R. were supported by NASA grant NAGW-4083 under the Origins of Solar Systems program. J. L. acknowledges support from the NSF through grant AST92-17961.",

year = "1997",

doi = "10.1086/316784",

language = "English (US)",

volume = "489",

pages = "L165--L168",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 PART II",

}

TY - JOUR

T1 - Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

AU - Luhman, K. L.

AU - Liebert, James

AU - Rieke, G. H.

N1 - Funding Information: We thank J. D. Kirkpatrick for access to his optical spectra of late-type stars. We are grateful to F. Allard, I. Baraffe, and A. Burrows for providing their most recent calculations and useful advice. We also thank A. Grauer for providing the K-band photometry. K. L. and G. R. were supported by NASA grant NAGW-4083 under the Origins of Solar Systems program. J. L. acknowledges support from the NSF through grant AST92-17961.

PY - 1997

Y1 - 1997

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=3543123593&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3543123593&partnerID=8YFLogxK

U2 - 10.1086/316784

DO - 10.1086/316784

M3 - Article

AN - SCOPUS:3543123593

SN - 0004-637X

VL - 489

SP - L165-L168

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART II

ER -

Spectroscopy of a young brown dwarf in the ρ ophiuchi cluster

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this