J/ApJ/504/27ivo://CDS.VizieR/J/ApJ/504/27doi:10.26093/cds/vizier.15040027CDSMarkevitch M.2001-07-31T10:43:09Z2001-07-31T10:42:34ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesThe X-ray luminosity-temperature relation for nearby T ~= 3.5-10 keV clusters is rederived using new ASCA temperatures and ROSAT luminosities. Both quantities are derived by directly excluding the cooling flow regions. This correction results in a greatly reduced scatter in the L_X_-T relation; cooling flow clusters are similar to others outside the small cooling flow regions. For a fit of the form L_bol_ {prop.to} T^{alpha}^, we obtain {alpha} = 2.64 +/- 0.27 (90%) and a residual rms scatter in log L_bol_ of 0.10. The derived relation can be directly compared to theoretical predictions that do not include radiative cooling. It also provides an accurate reference point for future evolution searches and comparison to cooler clusters. The new temperatures and L_X_-T relation together with a newly selected cluster sample are used to update the temperature function at z ~ 0.05. The resulting function is generally higher and flatter than, although within the errors of, the previous estimates by Edge and coworkers and Henry and Arnaud (as rederived by Eke and coworkers). For a qualitative estimate of constraints that the new data place on the density fluctuation spectrum, we apply the Press-Schechter formalism for {Omega}_0_ = 1 and 0.3. For {Omega}_0_ = 1, assuming cluster isothermality, the temperature function implies {sigma}_8_ = 0.55 +/- 0.03, while taking into account the observed cluster temperature profiles, {sigma}_8_ = 0.51 +/- 0.03, consistent with the previously derived range. The dependence of {sigma}_8_ on {Omega}_0_ is different from the earlier results because of our treatment of the slope of the fluctuation spectrum, n, as a free parameter. For the considered values of {Omega}_0_, n = -(2.0-2.3) +/- 0.3, somewhat steeper than that derived from the earlier temperature function data, in agreement with the local slope of the galaxy fluctuation spectrum from the Automatic Plate Measuring Facility (APM) survey, and significantly steeper than the standard cold dark matter prediction.1998ApJ...504...27Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/504/27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://hea-www.harvard.edu/~maxim/papers/tfdata/index.html : Temperaturehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/504/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/504/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/504/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/504/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/504/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/504/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/504/27/table1 (Full Cluster Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/504/27/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/504/27/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/504/27/table1?GETtext/xml+votable180.050000true10.40417-9.343330.0055555555555555566/206 207 8220 8268 9036 9354 10312 12121 14744 15112 16434 17141 17237 18016 19608 20021 20481 21766 23451 24943 26135 26208 33235 33628 34443 39077 39079 40777 40809 41412 43837 43838 43849 43977 45984https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/504/27?format=asciiX-raydefaultJ/ApJ/504/27/table1Full Cluster Sampler_Tfit[md] Source of Tfit (2)meta.refcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster Namemeta.id;meta.maincharn_Name[*d] Note on name (1)meta.notecharzRedshiftsrc.redshiftfloatTfitTemperature from fitkeVphys.temperaturefloatE_TfitError on Tfit in + direction (90% confidence)keVstat.errorfloate_TfitError on Tfit in - direction (90% confidence)keVstat.errorfloatTcorrCooling flow-corrected temperaturekeVphys.temperaturefloatr_Tcorr[me] Source of Tcorr (3)meta.refcharE_Tcorr? Error on Tcorr in + direction (90% confidence) (4)keVstat.errorfloatnullablee_Tcorr? Error on Tcorr in - direction (90% confidence) (4)keVstat.errorfloatnullableLXtotTotal 0.1-2.4 keV luminosity (5)1e+37Wphys.luminosity;em.X-rayfloatLX? Corrected 0.1-2.4 keV Luminosity (6)1e+37Wphys.luminosity;em.X-rayfloatnullableLbol? Bolometric luminosity (6)1e+37Wphys.luminosityfloatnullableflux? 0.1-2.4 keV flux, corrected for absorption (6)1e-14W.m**-2phot.flux;em.X-rayfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main