L-band photometry of L and T dwarfs

被引：24

作者：

Stephens, DC

Marley, MS

Noll, KS

Chanover, N

机构：

[1] New Mexico State Univ, Dept Astron, Las Cruces, NM 88012 USA

[2] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA

[3] Space Telescope Sci Inst, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 556卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

stars; low-mass; brown dwarfs;

D O I：

10.1086/322938

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 mum 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, L', and L-s magnitudes of our objects and the trends observed in the (K-L') 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 and L spectral class, and compare our temperature estimates with others.

引用

页码：L97 / L101

页数：5

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