J/A+A/598/A107ivo://CDS.VizieR/J/A+A/598/A107doi:10.26093/cds/vizier.35980107CDSRadovich M.Puddu E.Bellagamba F.Roncarelli M.Moscardini L.,Bardelli S.Grado A.Getman F.Maturi M.Huang Z.Napolitano N.,McFarland J.Valentijn E.Bilicki M.2020-03-27T04:59:28Z2017-02-07T08:20:20ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedIn this paper, we present the tools used to search for galaxy clusters in the Kilo Degree Survey (KiDS), and our first results. The cluster detection is based on an implementation of the optimal filtering technique that enables us to identify clusters as over-densities in the distribution of galaxies using their positions on the sky, magnitudes, and photometric redshifts. The contamination and completeness of the cluster catalog are derived using mock catalogs based on the data themselves. The optimal signal to noise threshold for the cluster detection is obtained by randomizing the galaxy positions and selecting the value that produces a contamination of less than 20%. Starting from a subset of clusters detected with high significance at low redshifts, we shift them to higher redshifts to estimate the completeness as a function of redshift: the average completeness is ~85%. An estimate of the mass of the clusters is derived using the richness as a proxy.2017A&A...598A.107Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/598/A107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/344 : KiDS-ESO-DR2 multi-band source catalog (de Jong+, 2015)http://kids.strw.leidenuniv.nl/DR2 : kiDS DR2 Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/598/A107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/598/A107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/598/A107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/598/A107https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/598/A107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/598/A107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/598/A107/clusters (Cluster positions and masses (corrected version, 27/03/2020))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A107/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A107/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A107/clusters?GETtext/xml+votable180.050000true128.608-0.7850.0055555555555555564/1685 5/1024-1026 5459 5461-5463 5468-5469 6399 6483-6484 6487 6490 6568-6569 6571-6572 6748 6819 6825-6826 6830 6912 10239 6/4108 4128 8202 8224 21830-21831 21841-21843 21861 21880-21881 21884 25589-25591 25593 25595 25908-25909 25915 25923 25926 25928-25929 25940 25942 25944-25946 25954-25957 25965-25966 25970 25972-25973 25975-25976 26001 26006-26007 26013 26049-26053 26055-26056 26064 26249 26251-26252 26254-26255 26264 26266 26280 26282 26296 26951 26953-26958 26976-26977 26979-26982 26996 26998 27002-27003 27273 27275 27288 27290 27297 27299 27309 27313-27315 27652 27656-27658 40950-40951 45039 45043 45049-45050 45052https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/598/A107?format=asciidefaultJ/A+A/598/A107/clustersCluster positions and masses (corrected version, 27/03/2020)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKDR2Cluster name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000Cluster Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Cluster Declination (J2000)degpos.eq.dec;meta.mainzPhotometric redshift of clustersrc.redshiftfloatsnrSignal to noise of cluster detectionstat.snrfloatRABdegBCG Right Ascension (J2000)degpos.eq.raDEBdegBCG Declination (J2000)degpos.eq.decrmagBCG r band magnitudemagphot.mag;em.opt.RfloatN500Number of member galaxy candidates within R500meta.numberintr500Radius at Delta=500Mpcphys.size.radiusfloatM500Cluster mass within r5001e+14solMassphys.massfloate_M500rms uncertainty on M5001e+14solMassstat.errorfloatN200Number of member galaxy candidates within R500meta.numberintr200Radius at Delta=200Mpcphys.size.radiusfloatM200Cluster mass within r2001e+14solMassphys.massfloate_M200rms uncertainty on M2001e+14solMassstat.errorfloat