The 600 K T9 Dwarfs: Analysis of the Spectral Energy Distributions

Details The 600 K T9 Dwarfs: Analysis of the Spectral Energy Distributions The 600 K T9 Dwarfs: Analysis of the Spectral Energy Distributions

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1094..541l&link_type=abstract

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun.

Physics

Low Luminosity Stars, Subdwarfs, And Brown Dwarfs, Star Formation, Celestial Mechanics

Scientific paper

We present 8-15 μm 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 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 MJup), and CFBDS J005910.82-011401.3 the most massive (30-50 MJup).

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