J/A+A/445/465ivo://CDS.VizieR/J/A+A/445/465doi:10.26093/cds/vizier.34450465CDSRicci R.Prandoni I.Gruppioni GSault R.J.De Zotti G.2017-11-06T12:23:32Z2006-01-16T21:53:16ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiradio-galaxiesredshiftedWe discuss our ATCA 18.5 and 22GHz flux density measurements of Southern extragalactic sources in the complete 5GHz sample of Kuehr et al. (1981, Cat. <VIII/5>). The high frequency (5-18.5GHz) spectral indices of steep-spectrum sources for which we have 18.5GHz data (66% of the complete sample) are systematically steeper than the low frequency (2.7-5GHz) ones, and there is evidence of an anti-correlation of high-frequency spectral index with luminosity. The completeness of 18.5GHz data is much higher (89%) for flat-spectrum sources (mostly quasars), which also exhibit a spectral steepening. Taking advantage of the almost complete redshift information on flat-spectrum quasars, we have estimated their 5GHz luminosity function in several redshift bins. The results confirm that their radio luminosity density peaks at z_peak about 2.5 but do not provide evidence for deviations from pure luminosity evolution as hinted at by other data sets. A comparison of our 22GHz flux densities with WMAP K-band data for flat-spectrum sources suggests that WMAP flux densities may be low by a median factor of about 1.2. The extrapolations of 5GHz counts and luminosity functions of flat-spectrum radio quasars using the observed distribution of the 5-18.5GHz spectral indices match those derived directly from WMAP data, indicating that the high frequency WMAP survey does not detect any large population of FSRQs with anomalous spectra.2006A&A...445..465Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/445/465CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/5 : Bright Extragalactic Radio Sources (1Jy) (Kuehr+, 1981)J/A+AS/105/211 : Optical identification status of 1Jy catalogue (Stickel+ 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/445/465https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/445/465http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/445/465https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/445/465https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/445/465http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/445/465GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/445/465/table1 (Radio fluxes, optical IDs and redshifts of Southern Kuehr sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/445/465/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/445/465/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/445/465/table1?GETtext/xml+votable180.050000true1.5578869-6.39314860.0055555555555555566/16509 16518 16655 16722 16764 16900 16962 17019 17184 17212 17351 17414 17443 17488 17516 17541 17579 17662 17754 17979 18002 18005 18017 18065 18089 18506 18624 18661 18669 18683 18784 19088 20503 20535 20657 20725 20904 21012 21049 21121 21133 21163 21266 21358 21437 21588 21768 21924 22658-22659 22917 22950 23099 23121 24608 24615 24775 24809 24845 24902 24936 25016 25055 25255-25256 25302 25428 25472 25503 25630 25677 25704 25742-25743 25810 25864 26115 26131 26149 26245 26966 27138 29675 29714-29715 29963 30021 30885 31029 31080 31334 32841 32892 33010 33180 33549 33560 33827 33968 34013 34038 34090 34095 34099 34104 34123 34210 34264 34428 34441 34461 34517 34545 34572 34669 34675 34699 34870-34871 34931 35056 35079 35217 35383 35434 35482 35491 35568 35608 35786 35801 36100 36178 36188 36417 36431 36554 36595 36785 36941 37064 37385 37474 38169 38189 38277 38311 38483 38800 39079 39087 39614 39658 39664 40060 40131 40141 40527 40547 40730 40777 40990 41051-41052 41057 41059 41072 41275 41310 42003 42060 42249 42980 43257 43259 43262 43366 43417 43626 43672 43822 43828 43936 44043 44147 44247 44293 44523 44776 44805 44859 44908 45011 45109 45178 45196 45393 45446 45612 45614 45763 45774 45823 45961 46055 46101 46174 46251 46273 46337 46373 46394 46437 46444 46512 46595 46764 46848 46851 46921 46964 47022 47057 47080 47107 47268 47325 47375 47534 47540 47636 47873 47941 48256 48323 48344 48362 48449 48496 48501 48529 48595 48610 48614 48724 48798 48846 489653.313034785154005e-24 1.4577353054677623e-23https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/445/465?format=asciiOpticalRadiodefaultJ/A+A/445/465/table1Radio fluxes, optical IDs and redshifts of Southern Kuehr sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1Jy1Jy Source name (HHMM-DDd)meta.id;meta.maincharS5GHz5GHz flux density from Kuehr catalogJyphot.flux.density;em.radio.3-6GHzfloatalpha2.7-5GHz spectral indexspect.index;em.radio.3-6GHzfloatClassClass of object (GALaxy, QSO, BL Lac)src.classcharz? Redshiftsrc.redshiftfloatnullableS18.5GHz18.5GHz ATCA flux densityJyphot.flux.density;em.radio.12-30GHzfloate_S18.5GHz18.5GHz ATCA flux density errorJystat.errorfloatS22GHz22GHz ATCA flux densityJyphot.flux.density;em.radio.12-30GHzfloate_S22GHz22GHz ATCA flux density errorJystat.errorfloatExt[R-] Source extension label: R (resolved)meta.notecharSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlcharSimbadSimbad column added by the CDSchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main