J/A+A/361/429ivo://CDS.VizieR/J/A+A/361/429doi:10.26093/cds/vizier.33610429CDSRoussel H.Sadat R.Blanchard A.2000-10-14T21:22:16Z2000-10-14T21:20:45ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesWe have analyzed the properties of a sample of 33 groups and clusters of galaxies for which both optical and X-ray data were available in the literature. This sample was built to examine the baryon content and to check for trends over a decade in temperature down to 1keV. We examine the relative contribution of galaxies and ICM to baryons in clusters through the gas-to-stellar mass ratio (M_gas_/M_*_). We find that the typical stellar contribution to the baryonic mass is between 5 and 20%, at the virial radius. The ratio (M_gas_/M_*_) is found to be roughly independent of temperature. Therefore, we do not confirm the trend of increasing gas-to-stellar mass ratio with increasing temperature as previously claimed.2000A&A...361..429Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/361/429CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/361/429https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/361/429http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/361/429https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/361/429https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/361/429http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/361/429GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-raydefaultJ/A+A/361/429/table1X-ray data. Parameters refer to Eq. 8 and 9 of the paper.z? Redshiftsrc.redshiftdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName(s) of cluster (abbreviated)meta.id;meta.maincharprimaryTX? Intracluster gas temperaturekeVphys.temperaturefloatnullableE_TX? Upper error on TX (1)keVstat.errorfloatnullablee_TX? Lower error on TX (1)keVstat.errorfloatnullabler_TXReference code for TX (2)meta.refcharRXlim? Limiting radius of X-ray emission (3)Mpcphys.size.radiusfloatnullablebetaSlope of gas profile (4)stat.fit.paramfloatrcXCore radius (4)Mpcphys.size.radiusfloatne0Central electron density (4)0.001cm**-3phys.densityfloatr_betaReference codes for gas profile (2)meta.refcharNamesOther name or complete name for RXJmeta.idcharJ/A+A/361/429/table2Optical data. The first part corresponds to the galaxy spatial distribution and the second part to the luminosity function (Eq. 5).recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of cluster (abbreviated)meta.id;meta.maincharprimaryTOP[(1-4)] Type of optical profile (1)meta.notecharsigma0Normalization of optical profile (2)stat.fit.paramfloatrcScale radius (3)Mpcphys.size.radiusdoubleepsilon? Slope (4)stat.fit.paramfloatnullableMBlim? Limiting blue magnitude of observationsphys.magAbs;em.optfloatnullabler_sigma0References for optical profile (5)meta.refcharMB*? Charac. B magnitude of luminosity functionphys.magAbs;em.optfloatnullablealpha? Slope of luminosity functionstat.fit.paramfloatnullabler_TOPReference code for luminosity function (5)meta.refcharJ/A+A/361/429/table3Dynamical quantities for the whole sample, at the limiting radius r_200_ and with the r_500_-T_X_ normalization of EMN (the redshift is taken into account in this relationship).r200Virial radiusMpcphys.size.radiusfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of cluster (abbreviated)meta.id;meta.maincharprimaryMtotTotal gravitating mass at r200 (1)1e+13solMassphys.massfloatMgasGas mass at r200 (1)1e+13solMassphys.massfloatM*Stellar mass at r200 (1)1e+13solMassphys.massfloatfbBaryon fraction at r200%phys.mass;arith.ratiofloatM/LBMass to blue luminosity ratio at r200 (1)solMass/solLumphys.composition.massLightRatiointMIHE/MSLMComparison of the two estimatorsstat.fit.paramfloatJ/A+A/361/429/table5Same as Table 3, but with the r_200_-T_X_ normalization of BNrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of cluster (abbreviated)meta.id;meta.maincharprimaryr200Virial radiusMpcphys.size.radiusfloatMtotTotal gravitating mass at r200 (1)1e+13solMassphys.massfloatMgasGas mass at r200 (1)1e+13solMassphys.massfloatM*Stellar mass at r200 (1)1e+13solMassphys.massfloatfbBaryon fraction at r200%phys.mass;arith.ratiofloatM/LBMass to blue luminosity ratio at r200 (1)solMass/solLumphys.composition.massLightRatiointMIHE/MSLMComparison of the two estimatorsstat.fit.paramfloatJ/A+A/361/429/table6Same as Table 4, but using the BN normalization.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassCategory according to TX (1)src.classcharrdeltaLimit in density contrast (2)stat.fit.paramcharfgas(SLM)Gas fraction (SLM estimator)%phys.mass;arith.ratiofloatfb(SLM)Baryon fraction%phys.mass;arith.ratiofloatMgas/M*(SLM)Gas to stellar mass ratiophys.mass;arith.ratiofloatMtot/M*(SLM)Total to stellar mass ratiophys.mass;arith.ratiofloatM/LB(SLM)Mass to blue luminosity ratiosolMass/solLumphys.composition.massLightRatiointfgas(IHE)Gas fraction (IHE estimator)%phys.mass;arith.ratiofloatfb(IHE)Baryon fraction%phys.mass;arith.ratiofloatMtot/M*(IHE)Total to stellar mass ratiophys.mass;arith.ratiofloatM/LB(IHE)Mass to blue luminosity ratiosolMass/solLumphys.composition.massLightRatiointJ/A+A/361/429/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCodeReference codemeta.refcharBibcodeBibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/A+A/361/429/table4Average dynamical quantities for the objects with the most reliable data (details on those that have been discarded can be found in the paragraph ``notes on individual clusters''), using the EMN normalization and at various limiting radii.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassCategory according to TX (1)src.classcharrdeltaLimit in density contrast (2)stat.fit.paramcharfgas(SLM)Gas fraction (SLM estimator)%phys.mass;arith.ratiofloatfb(SLM)Baryon fraction%phys.mass;arith.ratiofloatMgas/M*(SLM)Gas to stellar mass ratiophys.mass;arith.ratiofloatMtot/M*(SLM)Total to stellar mass ratiophys.mass;arith.ratiofloatM/LB(SLM)Mass to blue luminosity ratiosolMass/solLumphys.composition.massLightRatiointfgas(IHE)Gas fraction (IHE estimator)%phys.mass;arith.ratiofloatfb(IHE)Baryon fraction%phys.mass;arith.ratiofloatMtot/M*(IHE)Total to stellar mass ratiophys.mass;arith.ratiofloatM/LB(IHE)Mass to blue luminosity ratiosolMass/solLumphys.composition.massLightRatioint