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Low Resolution Spectroscopy of 13 Low Surface Brightness PN's

Published online by Cambridge University Press:  19 July 2016

A. Manchado ,
S. R. Pottasch  and
A. Mampaso
A. Manchado
Affiliation:
Instituto de Astrofísica de Canarias, Tenerife, Spain
S. R. Pottasch
Affiliation:
Kapteyn Astron. Institute, Groningen, the Netherlands
A. Mampaso
Affiliation:
Instituto de Astrofísica de Canarias, Tenerife, Spain

Abstract

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We have obtained long-slit low resolution spectra (7.5 A resolution) of a sample of 13 low surface brightness planetary nebulae using the 2.5-m Isaac Newton Telescope (La Palma) with the Image Photon Counting System (IPCS) covering a spectral range from 3300 A to 7300 A. From those spectra we calculated the ionic and total abundances of 0, N, Ne and Ar. Variations in the ionization structure between the inner and the outer part are found in some nebulae although the total abundances appear not to change significantly along the nebulae.

Type
II. Nebular Properties
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 220
Copyright
Copyright © Kluwer 1989