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A VLA Radio Continuum Survey of Planetary Nebulae

Published online by Cambridge University Press:  19 July 2016

A. Zijlstra ,
S. R. Pottasch  and
C. Bignell
A. Zijlstra
Affiliation:
Kapteyn Astron. Inst., Groningen NRAO (VLA) Socorro, NM. USA
S. R. Pottasch
Affiliation:
Kapteyn Astron. Inst., Groningen
C. Bignell
Affiliation:
NRAO (VLA) Socorro, NM. USA

Abstract

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With the Very Large Array it is now possible to make high resolution radio continuum maps with sensitivity less than a milliJansky in an observation of only 5 minutes. We have used this so-called snapshot capability to measure about 400 PN north of declination −35. Most of the measurements were carried out at 6 cm. Some of the stronger sources were observed at several frequencies. Most sources were detected, however many nebulae were too weak to map in detail. The resolution ranges from 1.5″ to 1′, depending on the size of the PN. The selected PN have sizes in the range from 4″ to 6′.

Type
I. Observational Data on Nebulae
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 60
Copyright
Copyright © Kluwer 1989