L-band photometry of L and T dwarfs

Denise C. Stephens; Mark S. Marley; Keith S. Noll; Nancy Chanover

doi:10.1086/322938

L-band photometry of L and T dwarfs

Denise C. Stephens, Mark S. Marley, Keith S. Noll, Nancy Chanover

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

27 Scopus citations

Abstract

We present K-and L-band photometry obtained with the Keck I telescope for a representative sample of L and T dwarfs. These observations were motivated in part by the dominant role H₂O and CH₄ play in shaping the flux near 2 and 3 μm and by the potential use of these bands as indicators of spectral class in the infrared. In addition, these observations aid the determination of the bolometric luminosity of L and T dwarfs. Here we report the K, L¹, and L_s magnitudes of our objects and the trends observed in the (K-L¹) and (K-L_s colors as a function of L and T dwarf spectral class. We compare these colors with theoretical models, derive a relationship between effective temperature a.nd L spectral class, and compare our temperature estimates with others.

Original language	English (US)
Pages (from-to)	L97-L101
Journal	Astrophysical Journal
Volume	556
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/322938
State	Published - Aug 1 2001
Externally published	Yes

Keywords

Stars: low-mass, brown dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/322938

Cite this

@article{59fb8bff9b1a4aaa905fb4065af33d91,

title = "L-band photometry of L and T dwarfs",

abstract = "We present K-and L-band photometry obtained with the Keck I telescope for a representative sample of L and T dwarfs. These observations were motivated in part by the dominant role H2O and CH4 play in shaping the flux near 2 and 3 μm and by the potential use of these bands as indicators of spectral class in the infrared. In addition, these observations aid the determination of the bolometric luminosity of L and T dwarfs. Here we report the K, L1, and Ls magnitudes of our objects and the trends observed in the (K-L1) and (K-Ls colors as a function of L and T dwarf spectral class. We compare these colors with theoretical models, derive a relationship between effective temperature a.nd L spectral class, and compare our temperature estimates with others.",

keywords = "Stars: low-mass, brown dwarfs",

author = "Stephens, {Denise C.} and Marley, {Mark S.} and Noll, {Keith S.} and Nancy Chanover",

note = "Funding Information: We thank Sandy Leggett for helpful comments and advice. D. C. S. and M. S. M. acknowledge support from NASA grants NAG2-6007 and NAG5-8919 and NSF grants AST 96-24878 and AST 00-86288. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We would also like to thank instrument specialists Bob Goodrich and Randy Campbell for their support and assistance in using the NIRC instrument.",

year = "2001",

month = aug,

day = "1",

doi = "10.1086/322938",

language = "English (US)",

volume = "556",

pages = "L97--L101",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 PART 2",

}

TY - JOUR

T1 - L-band photometry of L and T dwarfs

AU - Stephens, Denise C.

AU - Marley, Mark S.

AU - Noll, Keith S.

AU - Chanover, Nancy

N1 - Funding Information: We thank Sandy Leggett for helpful comments and advice. D. C. S. and M. S. M. acknowledge support from NASA grants NAG2-6007 and NAG5-8919 and NSF grants AST 96-24878 and AST 00-86288. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We would also like to thank instrument specialists Bob Goodrich and Randy Campbell for their support and assistance in using the NIRC instrument.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - We present K-and L-band photometry obtained with the Keck I telescope for a representative sample of L and T dwarfs. These observations were motivated in part by the dominant role H2O and CH4 play in shaping the flux near 2 and 3 μm and by the potential use of these bands as indicators of spectral class in the infrared. In addition, these observations aid the determination of the bolometric luminosity of L and T dwarfs. Here we report the K, L1, and Ls magnitudes of our objects and the trends observed in the (K-L1) and (K-Ls colors as a function of L and T dwarf spectral class. We compare these colors with theoretical models, derive a relationship between effective temperature a.nd L spectral class, and compare our temperature estimates with others.

AB - We present K-and L-band photometry obtained with the Keck I telescope for a representative sample of L and T dwarfs. These observations were motivated in part by the dominant role H2O and CH4 play in shaping the flux near 2 and 3 μm and by the potential use of these bands as indicators of spectral class in the infrared. In addition, these observations aid the determination of the bolometric luminosity of L and T dwarfs. Here we report the K, L1, and Ls magnitudes of our objects and the trends observed in the (K-L1) and (K-Ls colors as a function of L and T dwarf spectral class. We compare these colors with theoretical models, derive a relationship between effective temperature a.nd L spectral class, and compare our temperature estimates with others.

KW - Stars: low-mass, brown dwarfs

UR - http://www.scopus.com/inward/record.url?scp=0035429633&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035429633&partnerID=8YFLogxK

U2 - 10.1086/322938

DO - 10.1086/322938

M3 - Article

AN - SCOPUS:0035429633

SN - 0004-637X

VL - 556

SP - L97-L101

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

L-band photometry of L and T dwarfs

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this