J/MNRAS/498/4095ivo://CDS.VizieR/J/MNRAS/498/4095doi:10.26093/cds/vizier.74984095CDSNoordeh E.Canning R.E.A.King A.Allen S.W.Mantz A.Morris R.G.,Ehlert S.von der Linden A.Brandt W.N.Luo B.Xue Y.Q.Kelly P.2026-03-03T20:03:43Z2023-11-06T08:19:24ZCDS support team

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

cds-question@unistra.frgalaxy-clustersactive-galactic-nucleix-ray-sourcesredshiftedvisible-astronomyspectroscopyWe present an analysis of the X-ray active galactic nucleus (AGN) population in a sample of seven massive galaxy clusters in the redshift range 0.35<z<0.45. We utilize high-quality Chandra X-ray imaging to robustly identify AGN and precisely determine cluster masses and centroids. Follow-up VIsible Multi-Object Spectrograph optical spectroscopy allows us to determine which AGN are cluster members. Studying the subset of AGN with 0.5-8keV luminosities >6.8x10^42^erg/s, within r~<2r_500_ (approximately the virial radius), we find that the cluster AGN space density scales with cluster mass as ~M^(-2.0+0.8-0.9)^. This result rules out zero mass dependence of the cluster X-ray AGN space density at the 2.5{sigma} level. We compare our cluster X-ray AGN sample to a control field with identical selection and find that the cluster AGN fraction is significantly suppressed relative to the field when considering the brightest galaxies with V<21.5. For fainter galaxies, this difference is not present. Comparing the X-ray hardness ratios of cluster member AGN to those in the control field, we find no evidence for enhanced X-ray obscuration of cluster member AGN. Lastly, we see tentative evidence that disturbed cluster environments may contribute to enhanced AGN activity.2020MNRAS.498.4095Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/4095CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/4095https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/4095http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/4095https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/498/4095https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/498/4095http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/498/4095GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/498/4095/allspecz (Catalogue of the 1912 reliable redshifts acquired in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/498/4095/allspecz?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/498/4095/allspecz?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/498/4095/allspecz?GETtext/xml+votable180.050000true52.4415078-2.3626150.0055555555555555566/18667 19009 22661 22672 22771 22927 22938 22949 22960 23173 23175 25673 25675 27073 270753.1913271392865877e-19 4.0637684674699024e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/498/4095?format=asciiX-rayOpticaldefaultJ/MNRAS/498/4095/allspeczCatalogue of the 1912 reliable redshifts acquired in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainVmagSubaru V-band magnitudemagphot.mag;em.opt.VdoublezSpectroscopic redshiftsrc.redshiftdoublee_zError on zstat.error;src.redshiftdoubleSimbadNameSimbad column added by the CDSmeta.idcharnullable