J/MNRAS/453/1223ivo://CDS.VizieR/J/MNRAS/453/1223doi:10.26093/cds/vizier.74531223CDSHogan M.T.Edge A.C.Geach J.E.Grainge K.J.B.Hlavacek-Larrondo J.,Hovatta T.Karim A.McNamara B.R.Rumsey C.Russell H.R.Salome P.,Aller H.D.Aller M.F.Benford D.J.Fabian A.C.Readhead A.C.S.,Sadler E.M.Saunders R.D.E.2024-08-15T20:15:02Z2016-04-27T07:13:29ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradio-galaxiesWe consider the high radio-frequency (15-353GHz) properties and variability of 35 brightest cluster galaxies (BCGs). These are the most core-dominated sources drawn from a parent sample of more than 700 X-ray selected clusters, thus allowing us to relate our results to the general population. We find that >=6.0 percent of our parent sample (>=15.1 percent if only cool-core clusters are considered) contain a radio source at 150GHz of at least 3mJy (~1x10^23^W/Hz at our median redshift of z~0.13). Furthermore, >=3.4 percent of the BCGs in our parent sample contain a peaked component (Gigahertz Peaked Spectrum, GPS) in their spectra that peaks above 2GHz, increasing to >=8.5 percent if only cool-core clusters are considered. We see little evidence for strong variability at 15GHz on short (week-month) time-scales although we see variations greater than 20 percent at 150GHz over six-month time frames for 4 of the 23 sources with multi-epoch observations. Much more prevalent is long-term (year-decade time-scale) variability, with average annual amplitude variations greater than 1 percent at 15GHz being commonplace. There is a weak trend towards higher variability as the peak of the GPS-like component occurs at higher frequency. We demonstrate the complexity that is seen in the radio spectra of BCGs and discuss the potentially significant implications of these high-peaking components for Sunyaev-Zel'dovich cluster searches.2015MNRAS.453.1223Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/453/1223CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/453/1201 : Radio properties of brightest cluster galaxies (Hogan+ 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/453/1223https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/453/1223http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/453/1223https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/453/1223https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/453/1223http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/453/1223GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/453/1223/table2 (GISMO (150GHz) fluxes of the observed clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/453/1223/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/1223/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/1223/table2?GETtext/xml+votable180.050000true10.967916724.40680560.005555555555555556Cone search capability for table J/MNRAS/453/1223/table4 (CARMA (90GHz) fluxes of the observed BCGs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/453/1223/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/1223/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/1223/table4?GETtext/xml+votable180.050000true10.967541724.40597220.0055555555555555566/361 6611 7345 8258 8264 9664 10087 10182 10312 10656 10691 12642 15351 16051 17141 17601 18622 18778 19941 20095 22577 22771 23324 25478 25675 26469 26746 32693 36423 40615 40777 44502 44554 44802 45044 480761.0601711312492816e-23 2.3390025583187276e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/453/1223?format=asciiRadiodefaultJ/MNRAS/453/1223/table2GISMO (150GHz) fluxes of the observed clustersSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpoch[1/3] Epoch (1)time.epochintClusterCluster namemeta.id;meta.maincharObs.DateObservation datetime.epoch;obsnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maintauOptical extinctionphys.absorption;em.optfloatExpTimeExposure timemintime.duration;obs.exposureintCruchCRUSH option (2)meta.codecharl_FluxLimit flag on Fluxmeta.code.error;phot.fluxcharFluxGISMO flux at 150GHzmJyphot.flux.density;em.mm.100-200GHzfloate_Flux? rms uncertainty on FluxmJystat.error;phot.fluxfloatnullablen_e_Flux[7]? Note on e_Fluxmeta.noteintnullableFWHM? Full width at half-maximumarcsecspect.line.widthfloatnullableFPeak? Peak flux at 150GHzmJyphot.flux.density;em.mm.100-200GHzfloatnullablermsMap RMSinstr.det.noisefloatNEDSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/453/1223/table3AMI (16GHz) fluxes of the observed BCGsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharObs.date1First observation datetime.epochnullableFlux1AMI flux at 16GHz at Obs.date1mJyphot.flux.density;em.radio.12-30GHzfloate_Flux1rms uncertainty on Flux1mJystat.errorfloatrms1RMS at Obs.date1instr.det.noisefloatObs.date2Second observation datetime.epochnullableFlux2AMI flux at 16GHz at Obs.date2mJyphot.flux.density;em.radio.12-30GHzfloate_Flux2rms uncertainty on Flux2mJystat.errorfloatrms2RMS at Obs.date2instr.det.noisefloatObs.date3Third observation datetime.epochnullableFlux3? AMI flux at 16GHz at Obs.date3mJyphot.flux.density;em.radio.12-30GHzfloatnullablee_Flux3? rms uncertainty on Flux3mJystat.errorfloatnullablerms3? RMS at Obs.date3instr.det.noisefloatnullableJ/MNRAS/453/1223/table4CARMA (90GHz) fluxes of the observed BCGsrmsRMSinstr.det.noisefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharObs.DateObservation datetime.epoch;obsnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainl_FluxLimit flag on Fluxmeta.code.error;phot.fluxcharFluxCARMA flux at 90GHzmJyphot.flux.density;em.mm.50-100GHzfloate_Flux? rms uncertainty on FluxmJystat.error;phot.fluxfloatnullableJ/MNRAS/453/1223/table5SCUBA-2 (353 GHz) fluxes of the observed BCGsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharObs.DateObservation datetime.epoch;obsnullableFlux? SCUBA-2 flux at 353GHzmJyphot.flux.density;em.mm.200-400GHzfloatnullablermsRMSinstr.det.noisefloat