On The Parent Population of Radio Galaxies and the FR I--II Dichotomy
The possibility of radio galaxies being random sample of otherwise normal elliptical galaxies is tested. Starting with the observed optical luminosity functions for elliptical galaxies, it is shown that the probability of an elliptical forming a radio source is a continuous, increasing function of optical luminosity, precisely proportional to
Scarpa, R. et al.
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2001