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Atmospheres of Central Stars

Published online by Cambridge University Press:  22 September 2016

David G. Hummer
David G. Hummer*
Affiliation:
Joint Institute for Laboratory Astrophysics University of Colorado and National Bureau of Standards Boulder, Colorado 80309

Extract

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This review begins with a brief summary of atmospheric models that are of possible relevance to the central stars of planetary nebulae, and then discusses the extent to which these models accord with the observations of both nebulae and central stars. Particular attention is given to the significance of the very high Zanstra temperature implied by the nebular He II λ4686 Å line, and to the discrepancy between the Zanstra He II temperature and the considerably lower temperatures suggested by the appearance of the visual stellar spectrum for some of these objects.

Type
Session IV: The Central Stars of Planetary Nebulae
Information
Symposium - International Astronomical Union , Volume 76: Planetary Nebulae , 1978 , pp. 171 - 183
Copyright
Copyright © Reidel 1978 

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