Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-09-24
Astronomy and Astrophysics
Astrophysics
10 pages, 6 figures, To be published in Proceedings of the 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Scientific paper
In this contribution, I discuss some of the salient features of L and T dwarf spectra in both the red optical (6300--10000 {\AA}) and near-infrared (1--2.5 $\micron$) wavelength regimes. Important absorption bands and lines, including those of H$_2$O, CH$_4$, FeH, CrH, CO, and the alkali metal lines, are identified, and the development of recent classification schemes based on these features are discussed. I briefly point out future work required in these wavelength regions and in the mid-infrared that are required to garner a complete picture of these low-luminosity dwarfs.
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