Near-Infrared Spectral Classification of Late M and L Dwarfs
Near-Infrared Spectral Classification of Late M and L Dwarfs
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 …