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Models of H II regions - Heavy element opacity, variation of temperatureA detailed set of H II region models that use the same physics and self-consistent input have been computed and are used to examine where in parameter space the effects of heavy element opacity is important. The models are briefly described, and tabular data for the input parameters and resulting properties of the models are presented. It is found that the opacities of C, Ne, O, and to a lesser extent N play a vital role over a large region of parameter space, while S and Ar opacities are negligible. The variation of the average electron temperature T(e) of the models with metal abundance, density, and T(eff) is investigated. It is concluded that by far the most important determinator of T(e) is metal abundance; an almost 7000 K difference is expected over the factor of 10 change from up to down abundances.
Document ID
19850042920
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Rubin, R. H.
(NASA Ames Research Center Astrophysical Experiments Branch, Moffett Field; California, University, Los Angeles, CA, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1985
Publication Information
Publication: Astrophysical Journal Supplement Series
Volume: 57
ISSN: 0067-0049
Subject Category
Astrophysics
Accession Number
85A25071
Distribution Limits
Public
Copyright
Other

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