J/A+A/614/A82ivo://CDS.VizieR/J/A+A/614/A82doi:10.26093/cds/vizier.36140082CDSTarrio P.Melin J.-B.Arnaud M.2019-01-08T08:59:01Z2018-11-15T15:33:08ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesThe combination of X-ray and Sunyaev-Zeldovich (SZ) observations can potentially improve the cluster detection efficiency, when compared to using only one of these probes, since both probe the same medium, the hot ionized gas of the intra-cluster medium. We present a method based on matched multifrequency filters (MMF) for detecting galaxy clusters from SZ and X-ray surveys. This method builds on a previously proposed joint X-ray-SZ extraction method and allows the blind detection of clusters, that is finding new clusters without knowing their position, size, or redshift, by searching on SZ and X-ray maps simultaneously. The proposed method is tested using data from the ROSAT all-sky survey and from the Planck survey. The evaluation is done by comparison with existing cluster catalogues in the area of the sky covered by the deep SPT survey. Thanks to the addition of the X-ray information, the joint detection method is able to achieve simultaneously better purity, better detection efficiency, and better position accuracy than its predecessor Planck MMF, which is based on SZ maps alone. For a purity of 85%, the X-ray-SZ method detects 141 confirmed clusters in the SPT region; to detect the same number of confirmed clusters with Planck MMF, we would need to decrease its purity to 70%. We provide a catalogue of 225 sources selected by the proposed method in the SPT footprint, with masses ranging between 0.7 and 14.5x10^14^M_{sun}_ and redshifts between 0.01 and 1.2.2018A&A...614A..82Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/614/A82CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/4 : Abell and Zwicky Clusters of Galaxies (Abell+ 1974)J/A+A/534/A109 : MCXC Meta-Catalogue X-ray galaxy Clusters (Piffaretti+, 2011)J/ApJS/216/27 : Galaxy clusters discovered in the SPT-SZ survey (Bleem+, 2015)J/A+A/594/A27 : Planck Sunyaev-Zeldovich sources (PSZ2) (Planck+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/614/A82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/614/A82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/614/A82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/614/A82https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/614/A82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/614/A82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/614/A82/tablec1 (List of candidates for P_FA_=3.40x10^-6^, ordered according to their significance)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/614/A82/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/614/A82/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/614/A82/tablec1?GETtext/xml+votable180.050000true49.505-44.2320.0055555555555555566/20481 33117 33180 33208 33224 33235 33270 33272 33275 33391 33462 33474 33479 33509 33515 33517 33540 33544 33580 33586 33598 33605 33614 33628 33649 33664 33666 33668 33678 33692 33709 33712 33718 33725 33730 33741 33748 33769 33783 33796 33807 33810 33826-33827 33841 33844 33863 33871 33878 33882 33885 33890 33894-33895 33897 33910 33917 33945 33989-33990 34001 34020-34021 34032 34035 34038 34040 34049 34076 34083 34087 34104 34108 34121 34125 34142 34155 34161 34179 34181 34186 34202 34323-34324 34333 34338 34350 34355 34411 34442-34443 34461 34480 34496 34823 34891 34910 34940 34983 35007 35015 35043 35055 35066 35107 35110 35121 35139 35147 35171 35206 35266 35346 35359 35364 35382 35388 35397 35417 35458 35493 35501 35506 38922 38928 38944 38955 38973 39043 39047 39049 39067-39068 39077 39079 39093 39138 39428 39441 39443 39459 39462 39470 39476 39531 39552 39555 39559 39577 39586 39588 39594 39598 39608 45421 45426 45433 45435 45498 45506-45507 45542-45543 45546 45562 45682 45687 45852 45862 45893 45904 45942 45965-45966 45984 45995 45997 46009 46076-46077 46101 46108 46137 46139 46160 46192 46237 46240 46244 46255 46258 46301 46320 46341 46424 46441 46444 46470 46474 46484 46496 46612 46643 46652 46660 46689 46739 46743 46750 46752 46763 47387 47458 47463 47474 47509https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/614/A82?format=asciiX-raydefaultJ/A+A/614/A82/tablec1List of candidates for P_FA_=3.40x10^-6^, ordered according to their significanceSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/225] Sequential numbermeta.recordintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.main(S/N)JJoint S/Nstat.snrfloat(S/N)szSZ component of the joint S/Nstat.snrfloatqJJoint thresholdinstr.sensitivityfloat(S/N)J-qJDifference between the S/N and the thresholdstat.snrfloatSigniSignificance, calculated as explained in Sect. 4stat.fit.goodness;meta.modelledfloatPSZ2PSZ2 name (PSZ2 GLLL.ll+BB.bb) (Cat. J/A+A/594/A27)meta.idcharSPTSPT name (SPT-CLJHHMM-DDMM) (Cat. J/ApJS/216/27)meta.idcharMCXCMCXC name (RXC JHHMM.m+DDMM) (Cat. J/A+A/534/A109)meta.idcharAbellAbell name (ABELL NNNN or ACOS NNNN) (Cat. VII/4)meta.idcharz? Redshift of the matching cluster (1)src.redshiftfloatnullableM500? Mass estimation using the SZ redshift or the MCXC redshift (the former is shown if both are available)1e+14solMassphys.massfloatnullable