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Planetary nebular carbon-to-oxygen ratios, morphology and evolutionObservations secured with the image tube scanner (ITS) at the Shane 3 m telescope were compared with the data obtained with the International Ultraviolet Explorer (IUE). The spectra of this nitrogen-rich object was analyzed with the aid of the theoretical nubular models. The abundances of Ne, S, Cl, and Ar appear to be essentially solar to within a factor two. Two remarkable high-excitation planetary nebulae are IC 1297 and M1-1. The spectra of these objects are analyzed with the aid of the theoretical nebular models as far as possible. The models permit one to estimate the fraction of unobservable ions of abundant elements.
Document ID
19870019963
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Aller, Lawrence H.
(California Univ. Los Angeles, CA, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1987
Subject Category
Lunar And Planetary Exploration
Report/Patent Number
NAS 1.26:181365
NASA-CR-181365
Accession Number
87N29396
Funding Number(s)
CONTRACT_GRANT: NSG-5358
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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