Abstract
The physical and chemical structure of massive circumstellar envelopes is reviewed in relation with infrared and millimeter observations, with a particular emphasis on the carbon-rich shell IRC+ 10216. The spatial distribution of the physical parameters (temperature, density, velocity field, mass-loss, ionization, etc.) and their relations are discussed. The different chemical processes responsible for the observed molecular abundances are examined: freezing-out of chemical equilibrium, radical and ion reactions, grain processes, photochemistry, etc.
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Omont, A. (1985). The Physical and Chemical Structure of Circumstellar Envelopes. In: Morris, M., Zuckerman, B. (eds) Mass Loss from Red Giants. Astrophysics and Space Science Library, vol 117. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5428-1_43
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DOI: https://doi.org/10.1007/978-94-009-5428-1_43
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