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High-Resolution Structure of Southern Compact Steep Spectrum Sources

Published online by Cambridge University Press:  25 May 2016

A. Tzioumis ,
R. Morganti ,
C. Tadhunter ,
R. Dickson ,
C. Fanti ,
D. Dallacasa ,
J. Reynolds ,
D. Jauncey ,
R. Preston  and
P. Mcculloch
...Show all authors
A. Tzioumis
Affiliation:
1 ATNF – CSIRO, Epping, Australia
R. Morganti
Affiliation:
1 ATNF – CSIRO, Epping, Australia
C. Tadhunter
Affiliation:
3 Department of Physics, University of Sheffield, UK
R. Dickson
Affiliation:
3 Department of Physics, University of Sheffield, UK
C. Fanti
Affiliation:
2 Istituto di Radioastronomia, Bologna, Italy
D. Dallacasa
Affiliation:
2 Istituto di Radioastronomia, Bologna, Italy
J. Reynolds
Affiliation:
1 ATNF – CSIRO, Epping, Australia
D. Jauncey
Affiliation:
1 ATNF – CSIRO, Epping, Australia
R. Preston
Affiliation:
4 Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
P. Mcculloch
Affiliation:
5 University of Tasmania, Hobart, Tasmania, Australia
E. King
Affiliation:
5 University of Tasmania, Hobart, Tasmania, Australia
S. Tingay
Affiliation:
6 Mt. Stromlo & Siding Spring Obs., Canberra, ACT, Australia
P. Edwards
Affiliation:
7 University of Adelaide, Adelaide, SA, Australia
M. Costa
Affiliation:
5 University of Tasmania, Hobart, Tasmania, Australia
D. Jones
Affiliation:
4 Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
J. Lovell
Affiliation:
5 University of Tasmania, Hobart, Tasmania, Australia
R. Clay
Affiliation:
7 University of Adelaide, Adelaide, SA, Australia
D. Meier
Affiliation:
4 Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
D. Murphy
Affiliation:
4 Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
R. Gough
Affiliation:
1 ATNF – CSIRO, Epping, Australia
R. Ferris
Affiliation:
1 ATNF – CSIRO, Epping, Australia
G. White
Affiliation:
8 University of Western Sydney, Kingswood, NSW, Australia
P. Jones
Affiliation:
8 University of Western Sydney, Kingswood, NSW, Australia

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Two important factors for understanding the physical nature of compact steep spectrum (CSS) radio sources are determining the correct radio morphological classification of these objects together with their characteristics in wavebands different from the radio (Fanti et al. 1995, A&A, 302, 317). Seven CSS sources (linear dimensions < 30kpc for Ho = 50 kms–1Mpc–1 and α > 0.5, S ≃ v–α) have been found in a complete sample of strong southern radio sources. This group of CSS sources is particularly interesting because some optical and X-ray information is already available as part of a more general study of southern radio sources (Morganti et al. & Siebert et al. these Proceedings). The spectra of all the sources were presented in Tadhunter et al. (1993, MNRAS, 263, 999.) Here we present VLBI observations for three of these sources (0252-71, 1306-09 and 1814-63). The remaining four have already been imaged with VLBI (King et al. these Proceedings).

Type
Properties of Radio Sources
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 73 - 74
Copyright
Copyright © Kluwer 1996