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III Zw 2: Superluminal Motion and Compact Lobe Expansion in a Seyfert Galaxy

Published online by Cambridge University Press:  13 May 2016

A. Brunthaler ,
H. Falcke ,
G.C. Bower ,
M. Aller ,
H. Aller  and
H. Teräsranta
A. Brunthaler
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
H. Falcke
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany
G.C. Bower
Affiliation:
National Radio Astronomy Obervatory, Socorro, USA
M. Aller
Affiliation:
University of Michigan, Ann Arbor, USA
H. Aller
Affiliation:
University of Michigan, Ann Arbor, USA
H. Teräsranta
Affiliation:
Metsähovi Radio Research Station, Kylmälä, Finland

Abstract

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So far all relativistically boosted jets with superluminal motion have only been detected in normal radio galaxies that have early-type host galaxies. We have now discovered superluminal motion in the Seyfert 1 galaxy III Zw 2, classified as a spiral. Spectral and spatial evolution are closely linked. Since III Zw 2 is part of a sample of so-called radio-intermediate quasars (RIQ), it confirms earlier predictions of superluminal motion for this source, based on the argument that RIQs could be relativistically boosted jets in radio-weak quasars and Seyfert galaxies.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 110 - 111
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Brunthaler, A., Falcke, H., Bower, G.C., et al. 2000, A&A 357, L45.Google Scholar
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