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The critical densities for some emission linesThe critical densities for some emission lines of astronomical interest, especially in the UV range, are calculated on the basis of recent atomic data. Many lines can be used to estimate the densities between 100,000-100 million/cu cm. It is suggested that the intensity ratios of forbidden ArIV 2869/2854 A and forbidden NeIV 2425/2422 A line pairs are good density indicators.
Document ID
19890051421
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zheng, Wei (California, University San Diego; Beijing Observatory, People's Republic of China, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Astrophysical Letters and Communications
Volume: 27
Issue: 4 19
ISSN: 0888-6512
Subject Category
Astronomy
Report/Patent Number
ISSN: 0888-6512
Accession Number
89A38792
Funding Number(s)
CONTRACT_GRANT: NAS5-29293
Distribution Limits
Public
Copyright
Other

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