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The Astronomical Journal
Article . 1980 . Peer-reviewed
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Radio continuum emission in ring galaxies

Authors: F. D. Ghigo;

Radio continuum emission in ring galaxies

Abstract

Radio emission was found in two (Arp 118 and Arp 148) of 27 ring-type galaxies searched with the NRAO interferometer to a detection limit of about 10 mJy at 11.1 cm. These two were also observed at 6 cm with the higher sensitivity and resolution of the VLA. To allow a comparison of radio and optical features, optical positions and diameters were measured on the Palomar Sky Survey prints for 24 rings. Arp 148 contains a nonthermal, unresolved source near the centroid of the spindle. Arp 118 has three radio peaks coincident with optical emission knots located along an arc, as might result from the ring-shaped density wave model suggested for the case of II Hz 4 by Lynds and Toomre (Astrophys. J. 209, 382 (1976)). Three additional rings with detections cited in the literature are discussed (Arp 143, Arp 142, II Zw 188). There seems to be a tendency for the more irregular appearing galaxies to be radio sources. We detected none of the clean, regular rings, such as Arp 146, 147, or II Hz 4.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
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