J/MNRAS/474/1065ivo://CDS.VizieR/J/MNRAS/474/1065doi:10.26093/cds/vizier.74741065CDSSanders J.S.Fabian A.C.Russell H.R.Walker S.A.2024-08-18T20:17:05Z2021-03-04T09:29:19ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesWe analyse Chandra X-ray Observatory observations of a set of galaxy clusters selected by the South Pole Telescope using a new publicly available forward-modelling projection code, MBPROJ2, assuming hydrostatic equilibrium. By fitting a power law plus constant entropy model we find no evidence for a central entropy floor in the lowest entropy systems. A model of the underlying central entropy distribution shows a narrow peak close to zero entropy which accounts for 60 per cent of the systems, and a second broader peak around 130keV.cm^2^. We look for evolution over the 0.2-1.2 redshift range of the sample in density, pressure, entropy and cooling time at 0.015R_500_ and at 10kpc radius. By modelling the evolution of the central quantities with a simple model, we find no evidence for a non-zero slope with redshift. In addition, a non-parametric sliding median shows no significant change. The fraction of cool-core clusters with central cooling times below 2Gyr is consistent above and below z=0.6 (~30-40 per cent). Both by comparing the median thermodynamic profiles, centrally biased towards cool cores, in two redshift bins, and by modelling the evolution of the unbiased average profile as a function of redshift, we find no significant evolution beyond self-similar scaling in any of our examined quantities. Our average modelled radial density, entropy and cooling-time profiles appear as power laws with breaks around 0.2R_500_. The dispersion in these quantities rises inwards of this radius to around 0.4dex, although some of this scatter can be fitted by a bimodal model.2018MNRAS.474.1065Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/474/1065CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/216/27 : Galaxy clusters discovered in the SPT-SZ survey (Bleem+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/474/1065https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/474/1065http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/474/1065https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/474/1065https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/474/1065http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/474/1065GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/474/1065/tablea2 (Positions of the clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/474/1065/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/474/1065/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/474/1065/tablea2?GETtext/xml+votable180.050000true0.2499-57.80930.0055555555555555566/33274 33520 33534 33543 33553 33580 33598 33622 33668 33709 33713 33718 33725 33735 33741 33758 33764 33783 33796 33878 33894 33897 33905 33945 33956 33990 33999 34008 34049 34059 34139 34324 34326 34350 34355 34368 34821 34836 34839 34935 34954 35032 35043 35108 35121 35147 35342 35364 35388 35396 38973 39069 45424 45435 45526 45544 45867 45873 45894 45904 46001 46005 46083 46108 46120 46169 46235 46312 46323 46341 46345 46353 46368 46388 46402 46424 46444 46474 46491 46494 46642 46660 47463https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/474/1065?format=asciiX-raydefaultJ/MNRAS/474/1065/tablea2Positions of the clustersSPTSPT identifier (SPT-CLJHHMM+DDMM)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Peak right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Peak declination (J2000) (1)degpos.eq.dec;meta.mainRAadegAnnulus right ascension (J2000) (2)degpos.eq.raDEadegAnnulus declination (J2000) (2)degpos.eq.decOffsetOffset between peak and annulus in arcsecarcsecpos.angDistanceintOffsetkOffset between peak and annulus in kpckpcpos.angDistanceintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/474/1065/tablea1objects analysed hererecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1/83] Cluster indexmeta.idintSPTSPT identifier (SPT-CLJHHMM+DDMM)meta.id;meta.maincharNameMain identifier (if any)meta.idcharzRedshift from Bleem et al. (2015, Cat. J/ApJS/216/27)src.redshiftfloatNHGalactic equivalent hydrogen column density1e+20cm**-2phys.columnDensity;pos.galacticfloatrmax? Maximum radius examinedarcminphys.angSize;stat.maxfloatnullableRebinPercentage uncertainty on the emissivities in each bin after binning%stat.errorintTExpTotal-cleaned exposurekstime.expofloatCountsBackground-subtracted counts within the maximum radiusctphot.count;em.X-rayfloatCountsBkgBackground counts within the maximum radiusctinstr.backgroundfloatObsIDsList of Chandra observation identifiersmeta.id;obscharJ/MNRAS/474/1065/tablea3Goodness of fits.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSPTSPT identifier (SPT-CLJHHMM+DDMM)meta.id;meta.maincharBIN-NFWDifference in fit statistic BIN-NFW (1)stat.fit.paramfloatBIN-GNFWDifference in fit statistic BIN-GNFW (1)stat.fit.paramfloatBIN-NONHYDRODifference in fit statistic BIN-NONHYDRO (1)stat.fit.paramfloatINT-NFWDifference in fit statistic INT-NFW (1)stat.fit.paramfloatMBETA-NFWDifference in fit statistic MBETA-NFW (1)stat.fit.paramfloatKPLAW-NFWDifference in fit statistic KPLAW-NFW (1)stat.fit.paramfloatGRAD-NFWDifference in fit statistic GRAD-NFW (1)stat.fit.paramfloatJ/MNRAS/474/1065/tablec1*Table detailing individual profilesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSPTSPT identifier (SPT-CLJHHMM+DDMM)meta.id;meta.maincharModelModelmeta.notecharrinInner radius of the annulus on the skykpcphys.size.radius;obs.fieldfloatroutOuter radius of the annulus on the skykpcphys.size.radius;obs.fieldfloatkTTemperaturekeVphys.temperaturedoubleE_kTMedian 84.1 percentile of kTkeVstat.error;stat.maxdoublee_kTMedian 15.9 percentile of kTkeVstat.error;phys.energydoubleneElectron densitycm**-3phys.density;phys.electrondoubleE_neMedian 84.1 percentile of necm**-3stat.error;stat.maxdoublee_neMedian 15.9 percentile of necm**-3stat.errordoubleKeElectron entropykeV.cm**2phys.temperature;phys.electrondoubleE_KeMedian 84.1 percentile of KekeV.cm**2stat.error;stat.maxdoublee_KeMedian 15.9 percentile of KekeV.cm**2stat.errordoublePeElectron pressurekeV.cm**-3physdoubleE_PeMedian 84.1 percentile of PekeV.cm**-3stat.error;stat.maxdoublee_PeMedian 15.9 percentile ofPekeV.cm**-3stat.errordoubleg? Graviational acceleration (1)g.cm**-2phys.accelerationdoublenullableE_g? Median 84.1 percentile of g (1)g.cm**-2stat.error;stat.maxdoublenullablee_g? Median 15.9 percentile of g (1)g.cm**-2stat.errordoublenullabletcoolMean radiative cooling timeyrtime.intervaldoubleE_tcoolMedian 84.1 percentile of tcoolyrstat.error;stat.maxdoublee_tcoolMedian 15.9 percentile of tcoolyrstat.errordoubledM/dtMass deposition ratesolMass/yrarith.rate;phys.massdoubleE_dM/dtMedian 84.1 percentile of dM/dtsolMass/yrstat.error;stat.maxdoublee_dM/dtMedian 15.9 percentile of dM/dtsolMass/yrstat.errordoubleMtot? Cumulative-total masssolMassphys.massdoublenullableE_Mtot? Median 84.1 percentile of Mtot (1)solMassstat.error;stat.maxdoublenullablee_Mtot? Median 15.9 percentile of Mtot (1)solMassstat.errordoublenullableMgas? Cumulative-gas mass (1)solMassphys.massdoublenullableE_Mgas? Median 84.1 percentile of Mgas (1)solMassstat.error;stat.maxdoublenullablee_Mgas? Median 15.9 percentile of Mgas (1)solMassstat.errordoublenullable