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Compact Array Mapping of the Nuclear Starburst in NGC 7552

Published online by Cambridge University Press:  19 July 2016

Duncan A. Forbes ,
Ray P. Norris ,
Gerry M. Williger  and
R. Chris Smith
Duncan A. Forbes
Affiliation:
Lick Observatory, University of California, Santa Cruz, CA 95064, USA
Ray P. Norris
Affiliation:
Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 2121, Australia
Gerry M. Williger
Affiliation:
Cerro Tololo Inter–American Observatory, Casilla 603, La Serena, Chile
R. Chris Smith
Affiliation:
Cerro Tololo Inter–American Observatory, Casilla 603, La Serena, Chile

Abstract

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We discuss new observations of the starburst galaxy NGC 7552. From optical and near–infrared colour maps we find a red, dusty circumnuclear ring. High-resolution radio mapping from the ATCA reveals the same ring, and a number of bright blobs (probably SNRs). The ring is probably associated with gas and dust which have lost angular momenta due to torques in the bar potential and settled at the inner Lindblad resonance. These circumnuclear starburst rings may be relatively common (when mapped without the obscuring affects of dust) and may play a role in collimating material of a nuclear outflow.

Type
Imaging Results: Radio and Millimeter Waves
Information
Symposium - International Astronomical Union , Volume 158: Very High Angular Resolution Imaging , 1994 , pp. 355 - 357
Copyright
Copyright © Kluwer 1994 

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