J/ApJS/222/13ivo://CDS.VizieR/J/ApJS/222/13doi:10.26093/cds/vizier.22220013CDSGriffin R.D.Dai X.Kochanek C.S.Bregman J.N.2019-02-04T10:52:18Z2016-02-18T13:20:33ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedx-ray-sourcessurveysvisible-astronomysloan-photometryWe study 203 (of 442) Swift AGN and Cluster Survey extended X-ray sources located in the SDSS DR8 footprint to search for galaxy over-densities in three-dimensional space using SDSS galaxy photometric redshifts and positions near the Swift cluster candidates. We find 104 Swift clusters with a >3{sigma} galaxy over-density. The remaining targets are potentially located at higher redshifts and require deeper optical follow-up observations for confirmation as galaxy clusters. We present a series of cluster properties including the redshift, brightest cluster galaxy (BCG) magnitude, BCG-to-X-ray center offset, optical richness, and X-ray luminosity. We also detect red sequences in ~85% of the 104 confirmed clusters. The X-ray luminosity and optical richness for the SDSS confirmed Swift clusters are correlated and follow previously established relations. The distribution of the separations between the X-ray centroids and the most likely BCG is also consistent with expectation. We compare the observed redshift distribution of the sample with a theoretical model, and find that our sample is complete for z<~0.3 and is still 80% complete up to z~0.4, consistent with the SDSS survey depth. These analysis results suggest that our Swift cluster selection algorithm has yielded a statistically well-defined cluster sample for further study of cluster evolution and cosmology. We also match our SDSS confirmed Swift clusters to existing cluster catalogs, and find 42, 23, and 1 matches in optical, X-ray, and Sunyaev-Zel'dovich catalogs, respectively, and so the majority of these clusters are new detections.2016ApJS..222...13Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/222/13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/43 : 1SXPS Swift X-ray telescope point source catalogue (Evans+ 2014)VIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)J/ApJS/218/8 : Swift AGN and Cluster Survey (SACS). I. (Dai+, 2015)J/A+A/576/A130 : Ultra-deep cat. of X-ray groups in ECDF-S (Finoguenov+, 2015)J/ApJS/216/28 : SWXCS III. Cluster cat. from 2005-2012 Swift data (Liu+, 2015)J/MNRAS/437/2607 : Low X-ray luminosity galaxy clusters (Nilo Castellon+, 2014)J/A+A/551/A142 : 7 year Swift-XRT point source catalog (1SWXRT) (D'Elia+, 2013)J/ApJ/763/127 : Galaxy clusters discovered in SPT survey (Reichardt+, 2013)J/A+A/547/A57 : Swift X-ray Telescope Cluster Survey (Tundo+, 2012)J/MNRAS/423/1024 : XCS-DR1 Cluster Catalogue (Mehrtens+, 2012)J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)J/A+A/536/A8 : Planck early results. VIII. ESZ sample. (Planck+, 2011)J/A+A/534/A109 : MCXC Meta-Catalogue X-ray galaxy Clusters (Piffaretti+, 2011)J/A+A/528/A122 : SwiftFT catalog (Puccetti+, 2011)J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)J/MNRAS/404/325 : Massive galaxy clusters lensing analyse (Richard+, 2010)J/ApJ/713/970 : Low-resolution SED templates of AGNs & galaxies (Assef+, 2010)J/ApJ/697/506 : Mid-infrared galaxy luminosity function from AGN (Dai+, 2009)J/A+A/499/357 : REFLEX galaxies redshifts (Guzzo+, 2009)J/ApJS/172/561 : The 400d cluster Survey (Burenin+, 2007)J/ApJS/172/182 : XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)J/MNRAS/379/867 : BCG C4 cluster catalog (von der Linden+, 2007)J/ApJ/660/239 : MaxBCG cat. of galaxy clusters from SDSS (Koester+, 2007)J/ApJ/645/955 : ChaMP serendipitous galaxy cluster survey (Barkhouse+, 2006)J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)J/A+A/423/449 : RASS-SDSS Galaxy Clusters Survey. I. (Popesso+, 2004)J/AJ/125/2064 : Northern Optical Cluster Survey. II. (Gal+, 2003)J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)http://swift.gsfc.nasa.gov/ : Swift GRB mission home pagehttp://heasarc.gsfc.nasa.gov/W3Browse/all/mcxc.html : MCXC meta-catalog ofhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/222/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/222/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/222/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/222/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/222/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/222/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/222/13/table1 (The Swift AGN and Cluster Survey: SDSS confirmations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/222/13/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/13/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/13/table1?GETtext/xml+votable180.050000true5.297521.0772220.0055555555555555566/644 646 647 2044 2296 4296 4323 4450 4485 4954 4955 4977 5049 5080 5493 5625 5745 6100 6102 6258 6261 6404 7182 7313 8761 8798 8932 8954 8955 9024 9025 9143 9330 9370 9395 9431 9750 9827 9912 9926 10519 10666 10723 11217 11642 11904 13312 13331 13574 17749 18167 18258 18681 18683 18910 19049 19544 19868 19890 19891 20030 20191 20360 21595 23138 25529 27085 27291 27566 27841 27933 27961 27973 28063 28497 28629 28630 30546 31583 324842.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/222/13?format=asciiX-rayOpticaldefaultJ/ApJS/222/13/table1The Swift AGN and Cluster Survey: SDSS confirmationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSWCLSwift name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharz2'[0.06/0.8]? 2' source region size confirmed redshift (1)src.redshift;pos.heliocentricfloatnullablez3'[0.04/0.8]? 3' source region size confirmed redshift (1)src.redshift;pos.heliocentricfloatnullablez[0.04/0.8] Confirmed SDSS over-density (1)src.redshift;pos.heliocentricfloatsig[3.1/35.7] Confirmed significance {sigma} (1)stat.fit.goodnessfloatNnet[2.3/54.4] Number of galaxies above the background count (2)meta.numberfloatNopt[2.2/1157] Estimated optical richness (see section 6.3)src.class.richnessfloatrmag[12.5/22.3] Brightest cluster galaxy (BCG) SDSS r-band apparent magnitudemagphot.mag;em.opt.RfloatrMag[-29/-19.8] Brightest cluster galaxy (BCG) r-band absolute magnitudemagphys.magAbsfloatoffset[0/1.2] BCG-to-X-ray offsetMpcpos.angDistancefloatLXX-ray bolometric luminosity in erg/s1e-07Wphys.luminosity;em.X-raydoubleM500Mass M_500_ (3)solMassphys.massdoubleSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from names (right ascension part)degpos.eq.ra;meta.main_DEPositions from names (declination part)degpos.eq.dec;meta.main