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Magnitude Measurements of Central Stars of Planetary Nebulae

Published online by Cambridge University Press:  19 July 2016

R. Gathier  and
S. R. Pottasch
R. Gathier
Affiliation:
European Southern Observatory, München
S. R. Pottasch
Affiliation:
Kapteyn Astronomical Institute, Groningen

Abstract

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Magnitudes have been measured for 44 faint central stars of planetary nebulae by imaging the star and nebula of a CCD detector. The nebula is suppressed by using a continuum filter. The remaining nebular continuum is then subtracted as background as long as the star can be clearly seen. This is true in 41 of the 44 cases observed. Zanstra temperatures are calculated from the observed magnitudes, and discussed.

Type
III. Central Stars
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 302
Copyright
Copyright © Kluwer 1989