The GNIRS spectrum of the cool brown dwarf UGPS J0521+3640 (black) is intermediate between types T8 and T9

The GNIRS spectrum of the cool brown dwarf UGPS J0521+3640 (black) is intermediate between types T8 and T9, shown by templates in orange in blue. This work is the first publication using GNIRS since the instrument was recommissioned on Gemini North and takes advantage of the cross-dispersed mode, which covers the full spectral range from 0.8 to 2.5 microns in a single exposure. The instrument also offers higher resolution spectroscopy with more limited wavelength coverage.