J/MNRAS/380/1467ivo://CDS.VizieR/J/MNRAS/380/1467doi:10.26093/cds/vizier.73801467CDSGilmour R.Gray M.E.Almaini O.Best P.Wolf C.Meisenheimer K.,Papovich C.Bell E.2024-07-05T20:15:19Z2008-03-28T17:31:43ZCDS support team

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

cds-question@unistra.frgalaxy-clustersactive-galactic-nucleix-ray-sourcesWe present XMM data for the supercluster A901/2, at z~0.17, which is combined with deep imaging and 17-band photometric redshifts (from the COMBO-17 survey), two degree field (2dF) spectra and Spitzer 24um data, to identify active galactic nuclei (AGN) in the supercluster. The 90ks XMM image contains 139 point sources, of which 11 are identified as supercluster AGN with LX(0.5-7.5keV)>1.7x10^41^erg/cm^2^/s. The host galaxies have M_R_<-20 and only two of eight sources with spectra could have been identified as AGN by the detected optical emission lines. Using a large sample of 795 supercluster galaxies, we define control samples of massive galaxies with no detected AGN. The local environments of the AGN and control samples differ at >~98 per cent significance. The AGN host galaxies lie predominantly in areas of moderate projected galaxy density and with more local blue galaxies than the control sample, with the exception of one very bright type I AGN very near the centre of a cluster. These environments are similar to, but not limited to, cluster outskirts and blue groups. Despite the large number of potential host galaxies, no AGN are found in regions with the highest galaxy density (excluding some cluster cores where emission from the intra-cluster medium obscures moderate luminosity AGN). AGN are also absent from the areas with lowest galaxy density. We conclude that the prevalence of cluster AGN is linked to their environment.2007MNRAS.380.1467Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/380/1467CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2007)II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2004)VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/380/1467https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/380/1467http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/380/1467https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/380/1467https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/380/1467http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/380/1467GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/380/1467/table1 (X-ray sources and possible optical matches and 24um fluxes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/380/1467/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/380/1467/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/380/1467/table1?GETtext/xml+votable180.050000true149.152917-10.0442220.0055555555555555566/26787https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/380/1467?format=asciiX-raydefaultJ/MNRAS/380/1467/table1X-ray sources and possible optical matches and 24um fluxesn_Rel[l] l for lowmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[GGA2007]Sequential X-ray numbermeta.id;meta.mainintRAJ2000X-ray right ascension (J2000)pos.eq.ra;meta.mainDEJ2000X-ray declination sign (J2000)pos.eq.dec;meta.maine_PosError on X-ray position, as described in Sect. 3.3degstat.errordoubleCRCounts per second in the 0.5-7.5keV-band (1)0.001count.s**-1phot.count;em.X-rayfloatOptID? Optical id sequential numbermeta.id.crossintnullablen_OptID[1]? Note on OptID (2)meta.noteintnullableRAo? Optical right ascension (J2000)pos.eq.ranullableDEo? Optical declination sign (J2000)pos.eq.decnullablezphot? Photometric redshiftsrc.redshiftfloatnullablen_zphot[x] Note on zphot (2)meta.notecharRel? Reliability, the probability that the X-ray-optical association is not randomstat.probabilityfloatnullableProb? Probability, the chance that this X-ray-optical association gives the true counterpart (3)meta.id.assoc;stat.probabilityfloatnullablen_Prob[l] l for lowmeta.notecharF24um? Flux at 24um, from Spitzer data.mJyphot.flux.density;em.IR.15-30umfloatnullableP(Sp)? Probability from 24um data (4)stat.probabilityfloatnullableNotesNotes, detailed in notes.dat filemeta.notecharJ/MNRAS/380/1467/notesIndividual notesNoteNote codemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTextText of the notemeta.notechar