On the local radio luminosity function of galaxies. I: the Virgo cluster

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dc.creatorGavazzi, G.
dc.creatorBoselli, A.
dc.date1998-11-06
dc.date.accessioned2026-07-07T02:28:58Z
dc.date.available2026-07-07T02:28:58Z
dc.descriptionWe cross-correlate the galaxies brighter than mB=18 in the Virgo cluster with the radio sources in the NVSS survey (1.4 GHz), 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 (RB) distribution is gaussian, centered at log RB=-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 RB. 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 (MB=-17) have a probability of feeding low power radio sources similar to that of dwarf E galaxies as faint as MB=-13.
dc.description8 pages, 7 figures, 1 table; accepted for publication on Astronomy and Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/9811104
dc.identifierhttp://arxiv.org/abs/astro-ph/9811104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13285
dc.subjectAstrophysics
dc.titleOn the local radio luminosity function of galaxies. I: the Virgo cluster
dc.typetext

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