The Spectrum of the Brown Dwarf Gliese 229B
The Spectrum of the Brown Dwarf Gliese 229B
We present a spectrum of the cool (Teff = 900 K) brown dwarf Gliese 229B. This spectrum, with a relatively high signal-to-noise ratio per spectral resolution element (≳30), spans the wavelength range from 0.837 μm to 5.0 μm. We identify a total of four different major methane absorption features, including …