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Cool Ionized Gas in Galaxy Thick Disks

Published online by Cambridge University Press:  03 August 2017

F. P. Israel
F. P. Israel*
Affiliation:
Sterrewacht, Postbus 9513 2300 RA, Leiden, The Netherlands

Abstract

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Spiral galaxies whose radio continuum emission is dominated by their disks show a flattening of the radio continuum spectrum at frequencies well below 1 GHz. The effect appears to be stronger for edge-on than for face-on galaxies The most feasible explanation appears to be that the flattening reflects free-free absorption of nonthermal emission by a very low temperature ionized gas. This gas is probably highly clumped, and must be well-mixed with the nonthermally emitting plasma.

Type
II. The Disk-Halo Interface in Other Galaxies
Information
Symposium - International Astronomical Union , Volume 144: The Interstellar Disk-Halo Connection in Galaxies , 1991 , pp. 303 - 306
Copyright
Copyright © Kluwer 1991 

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