Discovery of an Outstanding Disk in the cD Galaxy of the HydraA Cluster

  title={Discovery of an Outstanding Disk in the cD Galaxy of the HydraA Cluster},
  author={Yutaka Fujita and Nobuhiro Okabe and Kosuke Sato and Takayuki Tamura and Satoki Matsushita and Hiroyuki Hirashita and Masanori Nakamura and Kyoko Matsushita and Kazuhiro Nakazawa and Motokazu Takizawa},
  journal={Publications of the Astronomical Society of Japan},
The central cD galaxy of the Hydra A cluster has one of the most powerful active galactic nuclei (AGNs) in the nearby Universe (z ~ 4 x 10^7 yr. The position angle of the disk and the galaxy's photometric axis are misaligned, which may imply that the cold gas in the disk is brought via galaxy mergers. Our observations may indicate that the supply of cold gas by galaxy mergers is required for the most intensive feedback from AGNs. 

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