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Measurement of the He II radiation field in planetary nebulae through Bowen fluorescenceExcitation of O III by He II is treated for sources over a useful range of densities to give accurate predictions of Bowen/non-Bowen line ratios. These are applied to recent observations of planetary nebulae to show that Bowen excitation increases monotonically with excitation class, and to deduce other important consequences.
Document ID
19870059013
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bhatia, A. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kastner, S. O.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: Physica Scripta
Volume: 35
Issue: 6, Ju
ISSN: 0031-8949
Subject Category
Astrophysics
Report/Patent Number
ISSN: 0031-8949
Accession Number
87A46287
Distribution Limits
Public
Copyright
Other

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