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A Multi-Radio-Frequency Study of a RQQ

  • K. M. Blundell
  • M. Lacy
Conference paper
Part of the International Astronomical Union book series (IAUS, volume 175)

Abstract

1821+643 is exceptionally bright at optical wavelengths with Mb ≈ −27 (Hutchings & Neff 1991), at a redshift of only 0.297. It is however, a radio-quiet quasar (RQQ) as can be demonstrated by considering e.g., the ratio of the luminosity in [OIII]λ5007 to the radio luminosity (Lacy, Rawlings, & Hill 1992). In contrast with other radio-quiet quasars however, E 1821+643 is located in a very rich cluster (Lacy et al. 1992) and is purported to reside in a gE host galaxy (Hutchings & Neff 1991). The full-resolution 8 GHz map is seen in Fig. 1. A bright unresolved core is seen with extended emission to the north-west (feature B). Features A and C are accurately diametrically opposed on either side of the core and therefore suggestive of jets; this is further supported by the alignment of features C, D and E.

Keywords

Radiation Field Active Galactic Nucleus Radio Luminosity Rich Cluster Extragalactic Radio Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© International Astronomical Union 1996

Authors and Affiliations

  • K. M. Blundell
    • 1
  • M. Lacy
    • 1
  1. 1.Oxford University AstrophysicsOxfordUK

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