Steep-spectrum radio sources in clusters of galaxies - the southern sample.

Slee et al. (1983) have established that radio galaxies near the centers of rich clusters of galaxies tend to have steeper radio spectra than field radio galaxies. Surveys of large numbers of clusters at Molonglo (408 MHz) and Culgoora (80 and 160 MHz) have identified a number of sources with unusually steep spectral indices. Eleven very-steep-spectrum sources were selected from the cluster sample for detailed observation with the VLA at 1.465 and 4.885 GHz. Six of these sources south of declination -10 deg were also satisfactorily observable with the Molonglo Observatory synthesis telescope (MOST) at 0.843 GHz. The present paper is concerned with the properties of the southern sample. It was found that steep-spectrum sources which were positioned near cluster centers by low-resolution radio telescopes are generally complex.