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The Chemical Composition of Planetary Nebulae

Published online by Cambridge University Press:  14 August 2015

Lawrence H. Aller  and
Stanley J. Czyzak
Lawrence H. Aller
Affiliation:
University of California, Los Angeles, Calif., U.S.A.
Stanley J. Czyzak
Affiliation:
The Ohio State University, U.S.A.

Extract

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The problem of the determination of the chemical compositions of planetary and other gaseous nebulae constitutes one of the most exasperating problems in astrophysics. On the one hand, the problem appears to be conceptually simple – the mechanisms of excitation of the various lines appear to be well understood and the necessary physical parameters can be obtained by quantum mechanical theory. Yet the task is a difficult one and we want to explore some of the significant features.

Type
Session III – Physical Processes
Information
Symposium - International Astronomical Union , Volume 34: Planetary Nebulae , 1968 , pp. 209 - 223
Copyright
Copyright © Reidel 1968 

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