J/A+A/343/86 J/A+A/343/86 Virgo cluster radio luminosity function. I. G Gavazzi A Boselli Astron. Astrophys. 343 86 1999 1999A&A...343...86G J/A+A/343/93 : Local radio luminosity function of galaxies. II (Gavazzi+ 1999) Clusters, galaxy Galaxies, radio Morphology galaxies: fundamental parameters galaxies: individual (Virgo cluster) galaxies: luminosity function, mass function radio continuum: galaxies 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.

VCC VCC denomination (Binggeli et al., 1985AJ.....90.1681B) --- Pmag Corrected photographic magnitude mag MType Morphological classification (VCC) --- Agg Membership to the individual Virgo clouds --- RAh Optical right ascension (B1950) h RAm Optical right ascension (B1950) min RAs Optical right ascension (B1950) s DE- Optical declination sign --- DEd Optical declination (B1950) deg DEm Optical declination (B1950) arcmin DEs Optical declination (B1950) arcsec RArh Radio right ascension (B1950) h RArm Radio right ascension (B1950) min RArs Radio right ascension (B1950) s DEr- Radio declination sign --- DErd Radio declination (B1950) deg DErm Radio declination (B1950) arcmin DErs Radio declination (B1950) arcsec R-Ooff Radio-optical offset arcsec Class Identification class number=1 1: pointlike radio sources with R<=3 2: extended sources not meeting the 3{sigma} criterion 3: dubious identifications not meeting the 3{sigma} criterion (not used in the following analysis) 4: pointlike sources whose radio-optical offset is within the optical extent of the galaxy --- S1.4GHz 1.4 GHz total flux density mJy Maj Radio source major axis arcsec Min Radio source minor axis arcsec r_S1.4GHz Reference to the 1.4 GHz data number=2 References: 6: Hummel, 1980A&AS...41..151H 8: Condon, 1987ApJS...65..485C 10: Kotanyi, 1980A&AS...41..421K 15: Condon et al., 1990ApJS...73..359C 19: Condon et al., 1998AJ....115.1693C (NVSS) --- Patricia Bauer CDS 1998Nov06Giuseppe Gavazzi <Giuseppe.Gavazzi@uni.mi.astro.it> J_A+A_343_86.xml