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Hubble Space Telescope Images of Nuclear Rings in Barred Galaxies

Published online by Cambridge University Press:  12 April 2016

Aaron J. Barth ,
Luis C. Ho ,
Alexei V. Filippenko ,
Varoujan Gorjian ,
Matthew A. Malkan  and
Wallace L. W. Sargent
Aaron J. Barth
Affiliation:
Department of Astronomy, University of California, Berkeley CA 94720
Luis C. Ho
Affiliation:
Department of Astronomy, University of California, Berkeley CA 94720
Alexei V. Filippenko
Affiliation:
Department of Astronomy, University of California, Berkeley CA 94720
Varoujan Gorjian
Affiliation:
Department of Astronomy, UCLA, Los Angeles, CA 90024
Matthew A. Malkan
Affiliation:
Department of Astronomy, UCLA, Los Angeles, CA 90024
Wallace L. W. Sargent
Affiliation:
Palomar Observatory, Caltech, Pasadena, CA 91125

Abstract

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We present new and archival Hubble Space Telescope (HST) images of circumnuclear star-forming rings in barred spiral galaxies. We find that nuclear rings in barred galaxies are composed of large numbers of super star clusters similar to those found recently in other types of starburst systems. In NGC 1097 and NGC 6951, the young clusters have absolute magnitudes of up to Mv = −14 or −15, depending on highly uncertain extinction corrections, and effective radii of 2–3 pc. The images (especially that of NGC 6951) also show intricate spiral dust lane structure interior to the rings.

Type
Posters for Part I and Part II
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 94 - 96
Copyright
Copyright © Astronomical Society of the Pacific 1996

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