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Co-Evolution of Brightest Cluster Galaxies and Galaxy Activity in the Host Clusters

  • Mei-Ling Huang (a1) and Lin-wen Chen (a2)

Abstract

We have identified ~500 relatively relaxed galaxy clusters at low redshift (z < 0.3) from the maxBCG catalog with double radio lobes at the center; about 200 radio counterparts of brightest cluster galaxies (BCGs) of these clusters appear to be wide-angle tailed (WAT) radio sources, indicating ongoing interaction between its host galaxy and the surrounding ICM. Our analysis suggests that the radio power of WAT is positively correlated with the optical luminosities of host BCGs, and increases with redshift; whereas the cluster ellipticity-radio galaxy fraction relation shows no obvious difference between WAT and non-WAT clusters.

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References

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Cheung, C. C. 2007, AJ, 133, 2097
Koester, B. P., et al. 2007, ApJ, 660, 221
Merritt, D., et al. 2002, Science, 297, 1310
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