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Dust Formation in Stellar Photospheres

The Case of Carbon Stars from Dwarfs to AGB Stars

Published online by Cambridge University Press:  25 May 2016

Takashi Tsuji
Takashi Tsuji*
Affiliation:
Institute of Astronomy, The University of Tokyo, Mitaka, Tokyo, 181 Japan

Abstract

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We examine whether dust forms in the photospheres of carbon-rich stars by referring to the case of red and brown dwarfs for which some observational clues on dust formation are now known. Dust may form in the photospheres of dwarf carbon stars and produce significant effects on both their structure and spectra. In carbon-rich asymptotic giant branch stars, dust probably forms in the photosphere, if not in the circumstellar envelope, and radiation pressure on dust is sufficient to expel the matter directly from the photosphere. This fact may play some role in mass-loss from cool luminous stars in general, including non-pulsating stars for which no successful mechanism of mass-loss was known.

Type
Session VII — Mass-Loss, Winds, and Formation of Dust Grains
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 313 - 324
Copyright
Copyright © Kluwer 2000 

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