FRII radio galaxies in the SDSS: Observational facts

  title={FRII radio galaxies in the SDSS: Observational facts},
  author={Dorota Kozieł-Wierzbowska and Gra.zyna Stasi'nska},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
Starting from the Cambridge Catalogues of radio sources, we have created a sample of 401 FRII radio sources that have counterparts in the main galaxy sample of the 7th Data release of the SDSS and analyse their radio and optical properties. We find that the luminosity in the Halpha line - which we argue gives a better measure of the total emission-line flux than the widely used O[III] luminosity - is strongly correlated with the radio luminosity P1.4GHz. We show that the absence of emission… 
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