- Conference date: 21–25 July 2008
- Location: St. Andrews (Scotland)
We present spectra of ULAS J003402.77‐005206.7, an extremely late‐type T dwarf. We fit synthetic spectra to the near‐ through mid‐infrared energy distribution of this dwarf, as well as to the near‐infrared spectra of two similar dwarfs, ULAS and CFBDS J005910.82‐011401.3. The fit to ULAS is constrained using mid‐infrared photometry. We derive effective temperatures of 550–600 K for all three of these T9 dwarfs; ULAS J003402.77‐005206.7 appears to be the least massive and CFBDS J005910.82‐011401.3 the most massive
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