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Spectroscopic Distances to Central Stars of Planetary Nebulae

Published online by Cambridge University Press:  19 July 2016

R. H. Méndez ,
R. P. Kudritzki ,
A. Herrero ,
D. Husfeld  and
H. G. Groth
R. H. Méndez
Affiliation:
Universitäts-Sternwarte, München, F.R.G.
R. P. Kudritzki
Affiliation:
Universitäts-Sternwarte, München, F.R.G.
A. Herrero
Affiliation:
Universitäts-Sternwarte, München, F.R.G.
D. Husfeld
Affiliation:
Universitäts-Sternwarte, München, F.R.G.
H. G. Groth
Affiliation:
Universitäts-Sternwarte, München, F.R.G.

Abstract

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We present spectroscopic distances for 22 central stars of planetary nebulae. These distances have been determined using information provided by our non-LTE model atmosphere analyses of the stellar H and He absorption line profiles. In this way, no assumptions about nebular properties are necessary.

Our spectroscopic distances turn out to be larger than many other frequently cited values. We show that our distances are not in contradiction with the available information about the interstellar extinction, and we describe additional evidence supporting them.

Type
II. Nebular Properties
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 168
Copyright
Copyright © Kluwer 1989