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A simple analytic approximation for dusty stromgren spheres.We interpret recent far-infrared observations of H II regions in terms of true absorption by internal dust of a significant fraction of the Lyman-continuum photons. We present approximate analytic expressions describing the effects of internal dust on the ionization structure of H II regions, and outline a procedure for deducing the properties of this dust from optical and infrared observations.
Document ID
19730026245
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/181054
Authors
Petrosian, V. (Stanford University Stanford, Calif., United States)
Silk, J.
Field, G. B. (California, University Berkeley, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
October 15, 1972
Publication Information
Publication: Astrophysical Journal
Volume: 177
Subject Category
Space Sciences
Accession Number
73A11047
Funding Number(s)
CONTRACT_GRANT: NGR-05-020-510
CONTRACT_GRANT: NGR-05-003-453
CONTRACT_GRANT: NSF GP-18476
Distribution Limits
Public
Copyright
Other

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