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J/A+A/343/86   Virgo cluster radio luminosity function. I. (Gavazzi+ 1999)

On the local radio luminosity function of galaxies. I: the Virgo cluster Gavazzi G., Boselli A. <Astron. Astrophys. 343, 86 (1999)> =1999A&A...343...86G (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, radio ; Morphology Keywords: galaxies: clusters: individual: Virgo cluster - galaxies: fundamental parameters - radio continuum: galaxies - galaxies: luminosity function, mass function Abstract: We cross-correlate the galaxies brighter than mB=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 (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. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 97 180 Parameters of the detected galaxies
See also: J/A+A/343/93 : Local radio luminosity function of galaxies. II (Gavazzi+ 1999) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- VCC VCC denomination (Binggeli et al., 1985AJ.....90.1681B) 6- 10 F5.2 mag Pmag Corrected photographic magnitude 12- 17 A6 --- MType Morphological classification (VCC) 19- 22 A4 --- Agg Membership to the individual Virgo clouds 24- 25 I2 h RAh Optical right ascension (B1950) 27- 28 I2 min RAm Optical right ascension (B1950) 30- 34 F5.2 s RAs Optical right ascension (B1950) 36 A1 --- DE- Optical declination sign 37- 38 I2 deg DEd Optical declination (B1950) 40- 41 I2 arcmin DEm Optical declination (B1950) 43- 46 F4.1 arcsec DEs Optical declination (B1950) 48- 49 I2 h RArh Radio right ascension (B1950) 51- 52 I2 min RArm Radio right ascension (B1950) 54- 58 F5.2 s RArs Radio right ascension (B1950) 60 A1 --- DEr- Radio declination sign 61- 62 I2 deg DErd Radio declination (B1950) 64- 65 I2 arcmin DErm Radio declination (B1950) 67- 70 F4.1 arcsec DErs Radio declination (B1950) 72- 75 F4.1 arcsec R-Ooff Radio-optical offset 77 I1 --- Class [1/4] Identification class (1) 79- 86 F8.1 mJy S1.4GHz 1.4 GHz total flux density 88- 90 I3 arcsec Maj ? Radio source major axis 92- 94 I3 arcsec Min ? Radio source minor axis 96- 97 I2 --- r_S1.4GHz Reference to the 1.4 GHz data (2)
Note (1): 1: pointlike radio sources with R≤3 2: extended sources not meeting the 3σ criterion 3: dubious identifications not meeting the 3σ criterion (not used in the following analysis) 4: pointlike sources whose radio-optical offset is within the optical extent of the galaxy Note (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)
Acknowledgements: Giuseppe Gavazzi
(End) Patricia Bauer [CDS] 06-Nov-1998
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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