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We present the discovery of 11 new T dwarfs, found during the course of aphotometric survey for mid-to-late T dwarfs in the 2MASS Point Source Catalogand from a proper motion selected sample of ultracool dwarfs in the 2MASSWorking Database. Using the NASA Infrared Telescope Facility SpeX spectrograph,we obtained low-resolution (R~150) spectroscopy, allowing us to derivenear-infrared spectral types of T2-T8. One of these new T dwarfs, 2MASSJ13243559+6358284, was also discovered independently by Metchev et al., inprep. This object is spectroscopically peculiar and possibly a binary and/orvery young (<300 Myr). We specifically attempted to model the spectrum of thissource as a composite binary to reproduce its peculiar spectralcharacteristics. The latest-type object in our sample is a T8 dwarf, 2MASSJ07290002-3954043, now one of the four latest-type T dwarfs known. All 11 Tdwarfs are nearby given their spectrophotometric distance estimates, with 1 Tdwarf within 10 pc and 8 additional T dwarfs within 25 pc, if single. These newadditions increase the 25 pc census of T dwarfs by ~14%. Their proximity offersan excellent opportunity to probe for companions at closer separations than arepossible for more distant T dwarfs.

Discovery of 11 New T Dwarfs in the Two Micron All-Sky Survey, Including a Possible L/T Transition Binary