J/ApJS/174/117ivo://CDS.VizieR/J/ApJS/174/117doi:10.26093/cds/vizier.21740117CDSMaughan B.J.Jones C.Forman W.Van Speybroeck L.2017-06-02T08:37:21Z2009-11-12T15:01:06ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourceschemical-abundancesWe have assembled a sample of 115 galaxy clusters at 0.1<z<1.3 with archived Chandra ACIS-I observations. We present X-ray images of the clusters and make available region files containing contours of the smoothed X-ray emission. The structural properties of the clusters were investigated, and we found a significant absence of relaxed clusters (as determined by centroid shift measurements) at z>0.5. The slope of the surface brightness profiles at large radii were steeper on average by 15% than the slope obtained by fitting a simple {beta}-model to the emission. This slope was also found to be correlated with cluster temperature, with some indication that the correlation is weaker for the clusters at z>0.5. We measured the mean metal abundance of the cluster gas as a function of redshift and found significant evolution, with the abundances dropping by 50% between z=0.1 and z~1. This evolution was still present (although less significant) when the cluster cores were excluded from the abundance measurements, indicating that the evolution is not solely due to the disappearance of relaxed, cool core clusters (which are known to have enhanced core metal abundances) from the population at z>~0.5.2008ApJS..174..117Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/174/117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/396/397 : Deep cluster survey in Chandra archival data (Boschin+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/174/117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/174/117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/174/117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/174/117https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/174/117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/174/117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/174/117/clusters (Properties of the clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/174/117/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/174/117/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/174/117/clusters?GETtext/xml+votable180.050000true4.64012516.4373890.005555555555555556Cone search capability for table J/ApJS/174/117/table1 (Summary of the observations used)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/174/117/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/174/117/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/174/117/table1?GETtext/xml+votable180.050000true4.64012516.43738890.0055555555555555566/247 4206 4215 4406 4965 5099 5100 5483 5569 5731 6337 6383 6539 7178 7242 7273 7371 7510 7768 7904 8033 8282 8921 8969 9050 9052 9168 9272 9466 9476 9498 9632 9764 10387 10527 10544 10664 10694 10992 11042 11080 11596 11626 11632 11685 11802 12253 12664 13314 13384 15003 17457 17472 17499 17840 18800 18878 19097 19283 19542 19848 19935 19950 20292 22607 22771 22915 22949 22972 23173 23176 23324 23349 23474 25102 25188 25675 25981 25990 26177 26189 26756 26785 27428 27574 27664 27740 28220 28221 28376 28430 28448 28488 28535 30946 31537 32500 32503 34139 34264 35147 36089 36423 36547 36846 38973 43945 45044 45962 46474 47043 48076 49012 49125https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/174/117?format=asciiX-raydefaultJ/ApJS/174/117/clustersProperties of the clustersSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster identificationmeta.id;meta.maincharprimaryEllEllipticity: e=(1-b/a) where a and b are the semimajor and -minor axes respectivelysrc.ellipticityfloatE_EllPositive error on ellipticitystat.error;stat.maxfloate_EllNegative error on ellipticitystat.errorfloatWCentroid shift <W>, in hundredths of R500 (1)pos.distance;arith.difffloate_WError on Centroid shift (1)stat.error;pos.cartesian.zfloatRwMaximum radius within which the centroid shift could be measured (in units of R500)pos.distancefloatb500? Logarithmic slope of the surface brightness profile at radius R_500_ (3)stat.fit.paramfloatnullableE_b500? Positive error on b500stat.error;stat.maxfloatnullablee_b500? Negative error on b500stat.errorfloatnullableR500Radius R_500_ (1)Mpcphys.size.radiusfloatkTTemperature for r<R_500_keVphys.temperaturefloatE_kTPositive error on kTkeVstat.error;stat.maxfloate_kTNegative error on kTkeVstat.error;phys.energyfloatLXX-ray luminosity for r<R_500_ (4)1e+37Wphys.luminosity;em.X-rayfloate_LXError on LX1e+37Wstat.errorfloatZMetal abundance for r<R_500_Sunphys.abund.ZfloatE_ZPositive error on ZSunstat.error;stat.maxfloate_ZNegative error on ZSunstat.error;src.redshiftfloatMgasGas Mass for r<R_500_1e+13solMassphys.massfloatE_MgasPositive error on Mass (2)1e+13solMassstat.error;stat.maxfloate_MgasNegative error on Mass (2)1e+13solMassstat.errorfloatkT2? Temperature for 0.15<(r/R_500_)<1 (3)keVphys.temperaturefloatnullableE_kT2? Positive error for kT2keVstat.error;stat.maxfloatnullablee_kT2? Negative error for kT2keVstat.errorfloatnullableLX2X-ray luminosity for (0.15<r<1)R_500_ (4)1e+37Wphys.luminosity;em.X-rayfloate_LX2Error on LX21e+37Wstat.errorfloatZ2? Metal abundance 0.15<(r/R_500_)<1 (3)Sunphys.abund.ZfloatnullableE_Z2? Positive error on Z2Sunstat.error;stat.maxfloatnullablee_Z2? Negative error on Z2Sunstat.errorfloatnullableYXYX = gas mass times mean X-ray spectral temperature (from Kravtsov et al., 2006ApJ...650..128K)1e+13solMass.keVarith.factor;pos.distancefloatE_YXPositive error on YX1e+13solMass.keVstat.error;stat.maxfloate_YXNegative error on YX1e+13solMass.keVstat.errorfloat_RAPosition (from table1) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from table1) (declination part)degpos.eq.dec;meta.mainJ/ApJS/174/117/table1Summary of the observations usedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster identification (1)meta.id;meta.maincharObsIDChandra observation identifier (NNNN)meta.id;obs.param;obsintRAJ2000ICRS hour of right ascension of the X-ray centroid (J2000)pos.eq.ra;meta.mainDEJ2000ICRS degree of declination (J2000)pos.eq.dec;meta.mainzRedshift of the cluster (2)src.redshiftfloatObsDateObservation datetime.epoch;obsnullableBG[BCD] "Blank-sky" background period corresponding for each observationmeta.codecharExpTimeCleaned exposure time of each observationkstime.duration;obsfloat