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Four New Evolved Planetary Nebulae

Published online by Cambridge University Press:  07 August 2017

S. Tamura  and
R. Weinberger
S. Tamura
Affiliation:
Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980, Japan
R. Weinberger
Affiliation:
Institut für Astronomie, Universität Innsbruck, Technikerstr. 25, Austria

Extract

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While examining Palomar Observatory Sky Survey prints for various purposes, we came upon a number of hitherto uncatalogued nebulous objects, all of them of low surface brightness. Four of them are considered by us as new planetary nebula candidates due to their morphology. For the brightest one of them, spectroscopic observations were carried out with the Cassegrain spectrograph attached to the 74-inch telescope of the Okayama Astrophysical Observatory: this object (1 = 65.49°, b = +3.18°) is clearly confirmed as a planetary nebula and obviously is in an advanced stage in its evolution; in Fig. 1, a spectrum of it is shown.

Type
I. The Observational PN Database
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 34
Copyright
Copyright © Kluwer 1993