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Date and Time of the Query: 2019-04-22 T11:38:59 PDT
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For refcode 2003AJ....126..119R:
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2003AJ....126..119R Sensitive Radio and Optical Observations of z~0.2 Rich Abell Clusters Elizabeth Rizza, Glenn E. Morrison, Frazer N. Owen, Michael J. Ledlow, Jack O. Burns, and John Hill Abstract. We present optical observations and radio continuum imaging data for a sample of rich, X-ray -- bright Abell clusters at intermediate (z~0.2) redshifts. We find that the radio galaxy population varies substantially from cluster to cluster within this homogeneous sample. The spatial distribution of the high-luminosity radio galaxies (HLRGs; L_1.4_>10^23^ W Hz^-1^) is very different from the low-luminosity radio galaxies (LLRGs; L_1.4_<=10^22.75^ W Hz^-1^), with the LLRGs displaying a flat spatial distribution in contrast to the centrally peaked HLRGs. A color-morphology classification shows that the HLRGs are composed primarily of galaxies with old stellar populations, whereas the LLRGs have a much more diverse composition. We do not see a correlation between the cluster radio fraction and cluster blue fraction. However, there is a moderate anticorrelation with richness, suggesting that a rich cluster is less likely to have radio-bright galaxies, whether the radio emission is due to active galactic nuclei or star formation. Keywords: Galaxies: Active, Galaxies: Clusters: General, Galaxies: Starburst, Radio Continuum
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