Near-Infrared Spectral Classification of Late M and L Dwarfs
Near-Infrared Spectral Classification of Late M and L Dwarfs
复制标题
晚期 M 和 L 矮星的近红外光谱分类
DOI：
10.1086/319418
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
J. Gizis
中科院分区：
文献类型：
--
作者：
I. Reid;A. Burgasser;K. Cruz;J. Kirkpatrick;J. Gizis
我们提供了11个超冷矮星的近红外（1-2.5 μm）低分辨率光谱，光谱类型从M7到L 8。结合我们的观察与Leggett等人在2001年发表的数据，我们已经测量了最强的原子特征的等效宽度，并构建了窄带指数来衡量最强分子特征的强度。这些测量结果表明，在近红外波长的行为是很好地与光谱类型，其中后者是从6300和10000之间的观测定义。特别是，设计用于测量1.4和1.85 μm蒸汽波段机翼吸收的四个指数与柯克帕特里克等人的系统（1999年出版）上的光谱类型呈现出线性单调相关性，允许从光学和近红外光谱进行一致的校准。
We present near-infrared (1–2.5 μm), low-resolution spectroscopy of 11 ultracool dwarfs, with spectral types ranging from M7 to L8. Combining our observations with data published by Leggett et al. in 2001, we have measured equivalent widths for the strongest atomic features and constructed narrowband indices to gauge the strength of the strongest molecular features. Those measurements show that the behavior at near-infrared wavelengths is well correlated with spectral type, where the latter is defined from observations between 6300 and 10000 Å. In particular, four indices designed to measure absorption in the wings of the 1.4 and 1.85 μm steam bands exhibit a linear, monotonic correlation with spectral type on the Kirkpatrick et al. system (published in 1999), allowing consistent calibration from both optical and near-infrared spectroscopy.
影响因子：
2.9
作者：
Griffiths, JM;Bennett, AE;Griffin, RG
通讯作者：
Griffin, RG