J/MNRAS/478/5473ivo://CDS.VizieR/J/MNRAS/478/5473doi:10.26093/cds/vizier.74785473CDSLopes P.A.A.Trevisan M.Lagana T.F.Durret F.Ribeiro A.L.B.,Rembold S.B.2024-08-18T20:20:25Z2022-02-08T12:47:39ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesWe used optical imaging and spectroscopic data to derive substructure estimates for local Universe (z<0.11) galaxy clusters from two different samples. The first was selected through the Sunyaev-Zel'dovich (SZ) effect by the Planck satellite, and the second is an X-ray-selected sample. In agreement to X-ray substructure estimates, we found that the SZ systems have a larger fraction of substructure than the X-ray clusters. We have also found evidence that the higher mass regime of the SZ clusters, compared to the X-ray sample, explains the larger fraction of disturbed objects in the Planck data. Although we detect a redshift evolution in the substructure fraction, it is not sufficient to explain the different results between the higher-z SZ sample and the X-ray one. We have also verified a good agreement (~60 per cent) between the optical and X-ray substructure estimates. However, the best level of agreement is given by the substructure classification given by measures based on the brightest cluster galaxy (BCG), either the BCG-X-ray centroid offset, or the magnitude gap between the first and second BCGs. We advocate the use of those two parameters as the most reliable and cheap way to assess cluster dynamical state. We recommend an offset cut-off ~0.01xR_500_ to separate relaxed and disturbed clusters. Regarding the magnitude gap, the separation can be done at {Delta}m_12_=1.0. The central galaxy paradigm (CGP) may not be valid for ~20 per cent of relaxed massive clusters. This fraction increases to ~60 per cent for disturbed systems.2018MNRAS.478.5473Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/478/5473CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/478/5473https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/478/5473http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/478/5473https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/478/5473https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/478/5473http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/478/5473GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/478/5473/tablea1 (Main properties of the 72 clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/478/5473/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/478/5473/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/478/5473/tablea1?GETtext/xml+votable180.050000true2.84036-28.854040.005555555555555556Cone search capability for table J/MNRAS/478/5473/tablea2 (Substructure measures, BCG coordinates, offsets and magnitude gaps for the 72 clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/478/5473/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/478/5473/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/478/5473/tablea2?GETtext/xml+votable180.050000true2.84021-28.854330.0055555555555555566/5438 8220 8264 8268 8271 8520 8526 8575 8648 9036 9072 9354 9366 9468 9506 9508 10182 10271 10311-10312 10379 11591 11809 16434 16492 16543 17141 17237 18016 18324 19204 19501 19993 20029 20031 20083 20481 20707 22577 22722 24943 25981 25983 26135 26208 26302 26690 27420 28181 28249 28251 34161 38853 39077 39079 40809 43830 43836-43838 43849 43939 43948 43950 43977 45981https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/478/5473?format=asciiX-raydefaultJ/MNRAS/478/5473/tablea1Main properties of the 72 clustersSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzHeliocentric redshiftsrc.redshiftfloatsigmaPVelocity dispersionkm/sphys.veloc.dispersionfloatE_sigmaPError on sigmaP, upper valuekm/sstat.error;stat.maxfloate_sigmaPError on sigmaP, lower valuekm/sstat.errorfloatR500Radius within which the matter density is 500 times the critical density for the total and dark matter profilesMpcphys.size.radiusfloatE_R500Error on R500, upper valueMpcstat.error;stat.maxfloate_R500Error on R500, lower valueMpcstat.errorfloatM500Mass of the cluster within R2001e+14solMassphys.massfloatE_M500Error on M500, upper value1e+14solMassstat.error;stat.maxfloate_M500Error on M500, lower value1e+14solMassstat.errorfloatR200Radius within which the matter density is 200 times the critical density for the total and dark matter profilesMpcphys.size.radiusfloatE_R200Error on R200, upper valueMpcstat.error;stat.maxfloate_R200Error on R200, lower valueMpcstat.errorfloatM200Mass of the cluster within R5001e+14solMassphys.massfloatE_M200Error on M200, upper value1e+14solMassstat.error;stat.maxfloate_M200Error on M200, lower value1e+14solMassstat.errorfloatJ/MNRAS/478/5473/tablea2Substructure measures, BCG coordinates, offsets and magnitude gaps for the 72 clustersNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintbetaSymmetry (beta) test (1)stat.fit.paramfloatbetasbeta test significance (1)stat.fit.goodnessfloatDELTADressler & Shectman ({DELTA}) test (1)stat.fit.paramDELTAsDELTA test significance (1)stat.fit.goodnessL3DDressler & Shectman (DS) and Lee 3D tests (1)stat.fit.paramfloatL3DsDS and Lee 3D tests significance (1)stat.fit.goodnessfloatADAnderson-Darling (AD) statisticstat.fit.paramfloatpADp-value associated to AD statisticstat.fit.paramdoubleRAJ2000BCG right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000BCG declination (J2000)degpos.eq.dec;meta.mainrMAGBCG r absolute magnitudephys.magAbsfloatDm12Luminosity gap, {DELTA}m_12_phot.mag;arith.difffloatOffsetOffset to the X-ray centre (in kpc)kpcpos.angDistancefloatOffset2Offset to the X-ray centre (in R500)pos.angDistancefloatDVBGCBCG velocity offsetphys.veloc;arith.difffloat