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The Megamaser Galaxy III Zw 35

Published online by Cambridge University Press:  25 April 2016

Jessica M. Chapman ,
L. Staveley-Smith ,
D. J. Axon ,
S. W. Unger ,
R. J. Cohen ,
A. Pedlar  and
R. D. Davies
Jessica M. Chapman
Affiliation:
Australia Telescope National Facility, PO Box 76, Epping, NSW 2121
L. Staveley-Smith
Affiliation:
Australia Telescope National Facility, PO Box 76, Epping, NSW 2121
D. J. Axon
Affiliation:
University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire
S. W. Unger
Affiliation:
Royal Greenwich Observatory, Herstmonceux, East Sussex
R. J. Cohen
Affiliation:
University of Manchester
A. Pedlar
Affiliation:
University of Manchester
R. D. Davies
Affiliation:
University of Manchester
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Abstract

III Zw 35 is a pair of galaxies characterised by intense OH maser emission, and powerful far-infrared and radio continuum. We have made a detailed study of the galaxy pair based on optical, infrared and radio observations. The brighter northern component is identified as a LINER or Seyfert galaxy and contains an active nuclear region from which radio continuum, OH maser and thermal dust emission are detected. We propose that the northern component has a compact active nucleus deeply embedded in an obscured region of diameter ~ 210 pc within which enhanced star-formation occurs. The lower luminosity, southern component is of low mass and is undergoing starburst activity over an extended region of diameter ~ 5.5 kpc. The origin of the starburst and non-thermal activity appears to be an interaction between the two components.

Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 2 , 1991 , pp. 241 - 242
Copyright
Copyright © Astronomical Society of Australia 1991

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References

Chapman, J. M., Staveley-Smith, L., Axon, D. J., Unger, S. W., Cohen, R.J., Pedlar, A. and Davies, R. D., 1990, Mon. Not. R. Astr. Soc., 244, 281.Google Scholar
Heckman, T. M., 1987, IAU Symp. No. 121, Khachikian, E. Y., Fricke, K. J. and Melnick, J. (eds), Reidel, Dordrecht, p. 421.Google Scholar
Hemquist, L., 1989, Nature, 340, 687.Google Scholar