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

Conference · Tue Jan 01 00:00:00 EST 2008

OSTI ID:960519

Saumon, Didier ^[1]; Leggett, Sandy K ^[2]; Burningham, Ben ^[3]; Cushing, Michael C ^[4]; Marley, Mark S ^[5]; Pinfield, David J ^[3]; Smart, Richard L ^[6]; Warren, Stephen J ^[7]

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1. Los Alamos National Laboratory
2. GEMINI OBSERVATORY
3. U HERTFORDSHIRE
4. U HAWAII
5. NASA AMES
6. INAF (ITALY)
7. IMPERIAL COLLEGE

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}).

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 960519
• Report Number(s): LA-UR-08-06009; LA-UR-08-6009; TRN: US201006%%1178
• Resource Relation: Conference: 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun ; July 21, 2008 ; St Andrews, Scotland
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
DWARF STARS
ENERGY SPECTRA
PHOTOMETRY
SPECTRA
STARS
TEMPERATURE RANGE