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Optical Observations of Ionized Gas in External Galaxies

Published online by Cambridge University Press:  14 August 2015

G. Monnet*
Affiliation:
Observatoire de Marseille, Marseille, France

Abstract

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This paper reviews recent optical results on the large scale distribution of ionized gas in spiral galaxies, including our own. There is a diffuse, inhomogeneous emission in the arm region in spirals, including our Galaxy, and in gas-rich galaxies a fainter diffuse emission between the arms.

Type
Part 2: Galactic H ii Regions
Copyright
Copyright © Reidel 1974 

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