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
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
收藏
页码:L97 / L101
页数:5
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