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Unified Cloudy Models of L and T Dwarfs: Physical Basis of the Spectral Classification in the Substellar Regime

Published online by Cambridge University Press:  26 May 2016

Takashi Tsuji
Takashi Tsuji*
Affiliation:
Institute of Astronomy, School of Science, The University of Tokyo 2-21-1 Osawa, Mitaka, Tokyo, 181-0015 Japan

Abstract

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Based on a simple thermodynamical argument, we proposed a cloudy model with a warm dust cloud deep in the photosphere. We showed, for the first time, that a single grid of model photospheres (800 ≲ Teff ≳ 2600 K) offers a natural explanation not only for the division of dwarfs cooler than M into the two distinct types L and T but also for the changes of the spectra and colors along the L – T spectral sequence.

Type
Part 7. Atmospheres and Internal Structure
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 361 - 364
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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