J/A+A/567/A89ivo://CDS.VizieR/J/A+A/567/A89doi:10.26093/cds/vizier.35670089CDSTozzi P.Moretti A.Tundo E.Liu T.Rosati P.Borgani S.,Tagliaferri G.Campana S.Fugazza D.D'Avanzo P.2017-12-15T10:55:56Z2014-11-07T12:25:13ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesWe present a spectral analysis of a new, flux-limited sample of 72 X-ray selected clusters of galaxies identified with the X-ray Telescope (XRT) on board the Swift satellite down to a flux limit of ~10^-14^erg/s/cm2 (SWXCS). We carry out a detailed X-ray spectral analysis with the twofold aim of measuring redshifts and characterizing the properties of the intracluster medium (ICM) for the majority of the SWXCS sources. Optical counterparts and spectroscopic or photometric redshifts for some of the sources are obtained with a cross-correlation with the NASA/IPAC Extragalactic Database. Additional photometric redshifts are computed with a dedicated follow-up program with the Telescopio Nazionale Galileo and a cross-correlation with the SDSS. In addition, we also blindly search for the Hydrogen-like and He-like iron K_{alpha}_ emission line complex in the X-ray spectrum. We detect the iron emission lines in 35% of the sample, and hence obtain a robust measure of the X-ray redshift z_X_ with typical rms error 1-5%. We use z_X_ whenever the optical redshift is not available. Finally, for all the sources with measured redshift, background-subtracted spectra are fitted with a single-temperature mekal model to measure global temperature, X-ray luminosity and iron abundance of the ICM. We perform extensive spectral simulations to accounts for fitting bias, and to assess the robustness of our results. We derive a criterion to select reliable best-fit models and an empirical formula to account for fitting bias. The bias-corrected values are then used to investigate the scaling properties of the X-ray observables.2014A&A...567A..89Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/528/A122 : SwiftFT catalog (Puccetti+, 2011)J/A+A/547/A57 : Swift X-ray Telescope Cluster Survey (Tundo+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A89https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/567/A89/table1 (Cluster sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/567/A89/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/567/A89/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/567/A89/table1?GETtext/xml+votable180.050000true0.93793-53.030280.0055555555555555566/453 646 2296 2357 4296 4323 4397 4485 4954-4955 5049 5493 5745 5801 5951 6404 8954-8955 9069 9100 9330 9682 9750 10666 12597 13312 13331 15292 16282 16526 16546 17453 17815 18492 18681 18683 18910 19868 22624 23138 26503 27961 27973 28497 32646 32715 33004 34948 35045 35090 35330 35525 36031 36074 36460 38926 40433 40795 45401 45409 46218 47436https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/567/A89?format=asciiX-raydefaultJ/A+A/567/A89/table1Cluster samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXSimbad column added by the CDSmeta.ref.urlcharSWXCSSWXCS designation (JHHMMSS+DDMM.m) (1)meta.id;meta.maincharprimaryn_SWXCS[*] Several possible counterparts (2)meta.notecharz1? Optical redshift from cross-correlation with NEDsrc.redshiftdoublenullablee_z1? rms uncertainty on z1stat.errordoublenullablef_z1[ps] photometric or spectroscopic redshiftmeta.codecharz2? Optical redshift from follow-up with TNGsrc.redshift.photfloatnullableE_z2? Error on z2 (upper value)stat.error;stat.maxfloatnullablee_z2? Error on z2 (lower value)stat.errorfloatnullabler_z2[*] * for redshift obtained with VLT archival datameta.ref;pos.framecharzX? X-ray redshiftsrc.redshift;pos.heliocentricfloatnullableE_zX? Error on z2 (upper value)stat.error;stat.maxfloatnullablee_zX? Error on z2 (lower value)stat.errorfloatnullableSrvReference for optical redshift (survey name)meta.idcharr_Srv? Reference for redshift from literature (3)meta.ref;pos.frameintnullableOClOptical counterpart (cluster)meta.id.assoccharOGalOptical counterpart (galaxy)meta.id.assoccharNameName of the X-ray source in paper I (JHHMMSS+DDMMSS; cat. J/A+A/547/A57)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Paper I (Tundo et al., 2012, Cat. J/A+A/547/A57) (right ascension part)degpos.eq.ra;meta.main_DEPositions from Paper I (Tundo et al., 2012, Cat. J/A+A/547/A57) (declination part)degpos.eq.dec;meta.mainJ/A+A/567/A89/table2Results of X-ray spectral analysisE_kTcError on kTc (upper value)keVstat.error;stat.maxfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSWXCSSWXCS designation (JHHMMSS+DDMM.m)meta.id;meta.maincharRextRadius of the circular region used for spectroscopic analysisarcminphys.angSize;obs.fieldfloatkTTemperature directly obtained from the spectral analysiskeVphys.temperaturefloatE_kTError on kT (upper value)keVstat.error;stat.maxfloate_kTError on kT (lower value)keVstat.error;phys.energyfloatkTcTemperature corrected for fitting biaskeVphys.temperaturefloate_kTcError on kTc (lower value)keVstat.errorfloatl_ZLimit flag on Zmeta.code.error;src.redshiftcharZIron abundance directly obtained from the spectral analysisSunphys.abund.FefloatE_Z? Error on Z (upper value)Sunstat.error;stat.maxfloatnullablee_Z? Error on Z (lower value)Sunstat.error;src.redshiftfloatnullablel_ZcLimit flag on Zcmeta.code.error;phys.abund.ZcharZc? Iron abundance corrected for the fitting biasSunphys.abund.ZfloatnullableE_Zc? Error on Zc (upper value)Sunstat.error;stat.maxfloatnullablee_Zc? Error on Zc (lower value)Sunstat.error;pos.cartesian.zfloatnullableFSSoft (0.5-2keV) band flux measured within RextmW.m**-2phot.flux;em.X-raydoubleLSX-ray luminosity in the soft (0.5-2keV) band measured within Rext (in 10^44^erg/s)1e+37Wphys.luminosity;em.X-rayfloatLbolBolometric X-ray luminosity measured within Rext (in 10^44^erg/s)1e+37Wphys.luminosityfloatCtsNet counts in the soft (0.5-2keV) bandctphot.count;em.X-rayfloatR500lEstimated R500 in kpc (1)kpcphys.size.radiusinte_R500lrms uncertainty on R500 in arcminkpcstat.errorintR500Estimated R500 in arcmin (1)arcminphys.size.radiusfloate_R500rms uncertainty on R500 in arcminarcminstat.errorfloatLS2Estinated X-ray luminosity in the 0.5-2keV band within R500 (in 10^44^erg/s)1e+37Wphys.luminosity;em.X-rayfloatE_LS2Error on LS2 (upper value)1e+37Wstat.error;stat.maxfloate_LS2Error on LS2 (lower value)1e+37Wstat.errorfloatLbol2Estimated bolometric X-ray luminosity within R500 (in 10^44^erg/s)1e+37Wphys.luminosityfloatE_Lbol2Error on Lbol2 (upper value)1e+37Wstat.error;stat.maxfloate_Lbol2Error on Lbol2 (lower value)1e+37Wstat.errorfloat