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Investigation of two Planetary Nebulae and their Angular Vicinity in Cygnus

Published online by Cambridge University Press:  19 July 2016

W. Saurer  and
R. Weinberger
W. Saurer
Affiliation:
Institut für Astronomie der Universität Innsbruck, Austria
R. Weinberger
Affiliation:
Institut für Astronomie der Universität Innsbruck, Austria

Abstract

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We present the results of an investigation of M1-79 and K3-82. Physical parameters like expansion velocities, spatial shapes, Zanstrahydrogen-temperatures, etc. were obtained by use of high resolution spectroscopy and CCD-images.

The two PN are medium excitation and exhibit usual expansion velocities. To find out the spatial shapes we utilized the simple model of a truncated spherical shell. A comparison between the theoretical intensity ratios from this model and the measurements is leading to the conclusion that both PN have the structure of a ring. K3-82 is seen pole-on, Ml-79 is seen edge-on.

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