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Some Aspects of Chemical Abundance Determinations in Planetary Nebulae

Published online by Cambridge University Press:  22 September 2016

Lawrence H. Aller
Lawrence H. Aller*
Affiliation:
Astronomy Department, University of California, Los Angeles

Extract

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The determination of the chemical compositions of gaseous nebulae in general and of planetary nebulae in particular is a difficult undertaking. The zeroth-order approximation is straightforward, the first approximation is challenging, and the second approximation is almost intractable.

Type
Session V: Chemical Abundances
Information
Symposium - International Astronomical Union , Volume 76: Planetary Nebulae , 1978 , pp. 225 - 233
Copyright
Copyright © Reidel 1978 

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