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The Position of the Central Stars of PN on the HR Diagram

Published online by Cambridge University Press:  19 July 2016

S. R. Pottasch*
Affiliation:
Kapteyn Astronomical Institute, P.O. Box 800, 9700 AV Groningen, The Netherlands

Extract

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Central stars can be placed on the HR diagram if their effective temperature (Teff) and radii are known. Knowledge of the radius can sometimes be replaced by another indication of the luminosity. The distance, which always plays an important, really critical role, is not well known. This is the essential reason that there is so much uncertainty about the position on the HR diagram.

Type
VI. Evolution
Copyright
Copyright © Kluwer 1989 

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