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Detection and Study of Secondary Structures in Some Planetary Nebulae

Published online by Cambridge University Press:  18 September 2017

R. Louise
R. Louise*
Affiliation:
Observatoire de Marseille (LA N°237-CNRS), 2 Place Le Verrier, F-13248 Marseille Cedex 4, France

Extract

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In order to detect faint nebulosities associated with planetary nebulae, long exposure plates are made on nine selected nebulae, using a large bandwidth (Δλ = 50 Å) interference filter coupled with an ITT image tube. Some peculiar features are observed, but they do not all account for “secondary structures” following Louise's terminology. We discuss the difficulties encountered by the photographic method.

Type
Abstracts of Contributed Papers
Information
Symposium - International Astronomical Union , Volume 103: Planetary Nebulae , 1983 , pp. 507
Copyright
Copyright © Reidel 1983