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Date and Time of the Query: 2019-04-19 T06:06:06 PDT
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For refcode 1999A&A...343...86G:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1999A&A...343...86G On the local radio luminosity function of galaxies. I. The Virgo cluster. GAVAZZI G., BOSELLI A. Received 11 September 1998/Accepted 5 November 1998 Abstract: We cross-correlate the galaxies brighter than m_B_=18 in the Virgo cluster with the radio sources in the NVSS survey (1.4GHz), resulting in 180 radio-optical identifications. We determine the radio luminosity function of the Virgo galaxies, separately for the early- and late-types. Late-type galaxies develop radio sources with a probability proportional to their optical luminosity. In fact their radio/optical (R_B_) distribution is gaussian, centered at log R_B_~-0.5, i.e. the radio luminosity is ~0.3 of the optical one. The probability of late-type galaxies to develop radio sources is almost independent of their detailed Hubble type, except for Sa (and S0+S0a) which are a factor of ~5 less frequent than later types at any R_B_. Giant elliptical galaxies feed "monster" radio sources with a probability strongly increasing with mass. However the frequency of fainter radio sources is progressively less sensitive on the system mass. The faintest giant E galaxies (M_B_=-17) have a probability of feeding low power radio sources similar to that of dwarf E galaxies as faint as M_B_=- 13. Key words: galaxies: clusters: individual: Virgo cluster - galaxies: fundamental parameters - galaxies: luminosity function, mass function - radio continuum: galaxies
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