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Planetary Nebulae: Advances in Radio Observations

Published online by Cambridge University Press:  22 September 2016

Yervant Terzian
Yervant Terzian*
Affiliation:
National Astronomy and Ionosphere Center Cornell University, Ithaca, New York

Extract

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The most recent review on planetary nebulae at radio wavelengths appeared in 1974 by Thompson. Previous summaries were given by Terzian (1968) and Higgs (1973). Major advances in this subject include extensive continuum observations at 5 GHz of southern planetary nebulae; the highly successful aperture synthesis observations providing brightness temperature distributions with a resolution of a few arc seconds; the high sensitivity observations of radio recombination lines which have allowed the unambiguous detection of collisional broadening in NGC 7027; the very recent detection of molecular CO emission from NGC 7027, IC 418 and NGC 6543, and CO and OH emission from possible proto-planetary nebulae.

Type
Session II: Observations of Planetary Nebulae
Information
Symposium - International Astronomical Union , Volume 76: Planetary Nebulae , 1978 , pp. 111 - 120
Copyright
Copyright © Reidel 1978 

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