J/MNRAS/384/1502ivo://CDS.VizieR/J/MNRAS/384/1502doi:10.26093/cds/vizier.73841502CDSStott J.P.Edge A.C.Smith G.P.Swinbank A.M.Ebeling H.2024-07-06T20:15:32Z2009-11-24T15:28:34ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesgalaxiesinfrared-sourcesredshiftedinfrared-photometryWe investigate the near-infrared evolution of brightest cluster galaxies (BCGs) from a sample of rich galaxy clusters since z~1. By employing an X-ray selection of LX>10^44^erg/s, we limit environmental effects by selecting BCGs in comparably high-density regions. We find a positive relationship between X-ray and near-infrared luminosity for BCGs in clusters with LX>5x10^44^erg/s. Applying a correction for this relation, we reduce the scatter in the BCG absolute magnitude by a factor of 30 per cent. The near-infrared J-K colour evolution demonstrates that the stellar population in BCGs has been in place since at least z=2, and that we expect a shorter period of star formation than that predicted by current hierarchical merger models. We also confirm that there is a relationship between 'blue' J-K colour and the presence of BCG emission lines associated with star formation in cooling flows.2008MNRAS.384.1502Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/384/1502CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/384/1502https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/384/1502http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/384/1502https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/384/1502https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/384/1502http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/384/1502GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/384/1502/BCGs (NIR photometry of BCGs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/384/1502/BCGs?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/384/1502/BCGs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/384/1502/BCGs?GETtext/xml+votable180.050000true215.41887537.29194440.0055555555555555566/206-207 1006 4206 4748 4867 5016 5701 5881 6092 6337 6441 6539 7242 7247 7768 7904 8220 8264 8589 8648 8788 8963 9036 9118 9144 9168 9366 9476 9506 9727 9764 9776 9997 10526-10527 10664 11042 11080 11264 11626 11807 11920 13362 13384 16410 16492 17084 17141 17222 17457 17487 17769 17797 18034 18324 18475 18584-18585 18598 18623 19097 19204 19266 19314 19451 19542 19848 19935 19993 20016 20021 20083 20095 20128 20361 21971 22607 22771 22915 23173 23474 26037 26785 27009 27740 27742 28022 28174 28220 28271 28622 30045 30946 31537 32362 32500 32503 36082 48489 48594 48639 48966 49012https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/384/1502?format=asciiX-rayOpticalInfrareddefaultJ/MNRAS/384/1502/BCGsNIR photometry of BCGsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameSimbad column added by the CDSmeta.id;meta.datasetcharNameGalaxy cluster namemeta.id;meta.maincharRAJ2000BCG Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000BCG Declination (J2000)pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatJmag? J magnitudemagphot.mag;em.IR.JfloatnullableKmagK magnitudemagphot.mag;em.IR.KfloatKMAGAbsolute K magnitudemagphys.magAbs;em.IR.KfloatLXX-ray luminosity (in 10^44^erg/s)1e+37Wphys.luminosity;em.X-rayfloatHa[y/n -] Presence of Halpha emissionmeta.notecharSimbadSimbad column added by the CDSchar