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Title: The 600K T9 dwarfs: analysis of the spectral energy distributions

We present 8--15 {mu}m spectra of ULAS J003402.77-005206.7, and 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 J133553.45+113005.2 and CFBDS J005910.82-011401.3. The fit to ULAS J133553.45+113005.2 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 (5--30 M{sub Jup}), and CFBDS J005910.82-011401.3 the most massive (30--50 M{sub Jup}).
Authors:
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Publication Date:
OSTI Identifier:
960519
Report Number(s):
LA-UR-08-06009; LA-UR-08-6009
TRN: US201006%%1178
DOE Contract Number:
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun ; July 21, 2008 ; St Andrews, Scotland
Research Org:
Los Alamos National Laboratory (LANL)
Sponsoring Org:
DOE
Country of Publication:
United States
Language:
English
Subject:
79; DWARF STARS; ENERGY SPECTRA; PHOTOMETRY; SPECTRA; STARS; TEMPERATURE RANGE