Multiwavelength Observations of the Gas-rich Host Galaxy of PDS 456: A New Challenge for the ULIRG-to-QSO Transition Scenario

  title={Multiwavelength Observations of the Gas-rich Host Galaxy of PDS 456: A New Challenge for the ULIRG-to-QSO Transition Scenario},
  author={Min Su Yun and Naveen A. Reddy and Nicholas Z. Scoville and David T. Frayer and E. Ian Robson and R. P. J. Tilanus},
  journal={The Astrophysical Journal},
  pages={723 - 734}
We report new K-band, radio continuum, and CO (1-0) imaging observations and 850 μm photometric observations of PDS 456, the most luminous QSO in the local universe (z < 0.3). The 0.″6 resolution K-band image obtained using the Keck Telescope shows three compact mK ~ 16.5 (MK ~ -21) sources at a projected distance of ~10 kpc to the southwest, and the host galaxy of PDS 456 may be interacting or merging with one or more companions. Observations using the Owens Valley Radio Observatory millimeter… 

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