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Element Abundance Analyses of Novae

Published online by Cambridge University Press:  12 April 2016

Robert E. Williams
Robert E. Williams*
Affiliation:
Steward Observatory, University of Arizona, Tucson, ArizonaUSA

Abstract

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The different methods by which element abundances in novae have been determined are reviewed. Curve of growth studies of novae at maximum light have indicated CNO nuclei to be greatly enhanced with respect to hydrogen in certain objects. These results are questionable because they depend upon an assumed temperature distribution in the photosphere which is probably too steep to be realistic. Emission line analyses of novae, generally obtained in the period of early decline, also indicate possible heavy element enhancement, however these results are tentative because of uncertainties in the parameters of the emitting gas. It is suggested that useful abundance determinations of nova ejecta might be obtained from studies of old, extended nova shells.

Type
Part II: Cataclysmic Variables
Information
International Astronomical Union Colloquium , Volume 42: The Interaction of Variable Stars with their Environment , 1977 , pp. 242 - 273
Copyright
Copyright © Veröff. Der Remeis-Sterwarte 1977

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