J/ApJ/834/210ivo://CDS.VizieR/J/ApJ/834/210doi:10.26093/cds/vizier.18340210CDSCarrasco M.Barrientos L.F.Anguita T.Garcia-Vergara C.Bayliss M.,Gladders M.Gilbank D.Yee H.K.C.West M.2017-09-04T07:53:34Z2017-08-30T09:35:39ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgravitational-lensingspectroscopyredshiftedWe present an extensive spectroscopic follow-up campaign of 29 strong lensing (SL) selected galaxy clusters discovered primarily in the Second Red-Sequence Cluster Survey (RCS-2). Our spectroscopic analysis yields redshifts for 52 gravitational arcs present in the core of our galaxy clusters, which correspond to 35 distinct background sources that are clearly distorted by the gravitational potential of these clusters. These lensed galaxies span a wide redshift range of 0.8<=z<=2.9, with a median redshift of z_s_=1.8+/-0.1. We also measure reliable redshifts for 1004 cluster members, allowing us to obtain robust velocity dispersion measurements for 23 of these clusters, which we then use to determine their dynamical masses by using a simulation-based {sigma}_DM_-M_200_ scaling relation. The redshift and mass ranges covered by our SL sample are 0.22<=z<=1.01 and 5x10^13^M_200_/h_70_^-1^M_{sun}_<=1.9x10^15^, respectively. We analyze and quantify some possible effects that might bias our mass estimates, such as the presence of substructure, the region where cluster members are selected for spectroscopic follow-up, the final number of confirmed members, and line-of-sight effects. We find that 10 clusters of our sample with N_mem_>~20 show signs of dynamical substructure. However, the velocity data of only one system is inconsistent with a uni-modal distribution. We therefore assume that the substructures are only marginal and not of comparable size to the clusters themselves. Consequently, our velocity dispersion and mass estimates can be used as priors for SL mass reconstruction studies and also represent an important step toward a better understanding of the properties of the SL galaxy cluster population.2017ApJ...834..210Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/834/210CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/A+A/425/367 : REFLEX Galaxy Cluster Survey catalogue (Boehringer+, 2004)J/ApJS/172/561 : The 400d cluster Survey (Burenin+, 2007)J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)J/MNRAS/406/1318 : Lensed-arc statistics of galaxy clusters (Horesh+, 2010)J/ApJS/193/8 : Spectroscopy of 26 lensing cluster cores (Bayliss+, 2011)J/MNRAS/413/3059 : 4098 galaxy clusters in SDSS Stripe 82 (Geach+, 2011)J/ApJ/736/21 : Galaxy clusters opt. cat. from AMF on SDSS DR6 (Szabo+ 2011)J/ApJ/749/97 : Multiple lensed images in MCS J1206.2-0847 (Zitrin+, 2012)J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)J/ApJ/772/25 : Massive SZE clusters observations with ACT (Sifon+, 2013)J/ApJ/792/45 : SPT-SZ survey galaxy clusters opt. spectroscopy (Ruel+, 2014)J/ApJS/216/27 : Galaxy clusters discovered in the SPT-SZ survey (Bleem+, 2015)J/ApJ/807/178 : Newly rich galaxy clusters from SDSS-DR12 (Wen+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/834/210https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/834/210http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/834/210https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/834/210https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/834/210http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/834/210GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/834/210/table3 (The VLT/Magellan spectroscopic redshifts of the cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/834/210/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/834/210/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/834/210/table3?GETtext/xml+votable180.050000true1.16403723-1.031056520.005555555555555556Cone search capability for table J/ApJ/834/210/clusters (Summary of dynamical properties and VLT/Magellan spectroscopic observations of the strong lensing-selected galaxy clusters (tables 1 and 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/834/210/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/834/210/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/834/210/clusters?GETtext/xml+votable180.050000true1.21667083-1.054605560.005555555555555556Cone search capability for table J/ApJ/834/210/table2 (Spectroscopic redshift of individual lensed galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/834/210/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/834/210/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/834/210/table2?GETtext/xml+votable180.050000true1.2149583-1.05550.0055555555555555566/8223 8270 8295 17117 17342 17405 18031 18042 18088 18120 18122 18137 18138 18750 18785 18999 19005 19089 19104 19105 26311 26886 26896 26914 26918 26922 28197 31466 36331 36633 36644 40944 40946https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/834/210?format=asciiOpticaldefaultJ/ApJ/834/210/table3The VLT/Magellan spectroscopic redshifts of the cluster membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster identifiermeta.id.parentcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.2/1.1] Spectroscopic redshiftsrc.redshiftfloatJ/ApJ/834/210/clustersSummary of dynamical properties and VLT/Magellan spectroscopic observations of the strong lensing-selected galaxy clusters (tables 1 and 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy cluster designationmeta.id;phys.atmol.configuration;meta.maincharprimaryn_NameNote on Name (1)meta.notecharRAJ2000Hour of right ascension (J2000) (G1)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (G1)pos.eq.dec;meta.mainExpFFORS2/VLT total exposure time (2)htime.duration;obs.exposurefloato_ExpFFORS2/VLT number of masks (2)meta.numberintExpI? IMACS/Magellan total exposure time (2)htime.duration;obs.exposurefloatnullableo_ExpI? IMACS/Magellan number of masks (2)meta.numberintnullableRefClusters formerly identified and/or described in previous studiesmeta.bibcharf_NameFlag(s) on Name (3)meta.codecharNlmeta.numberintnullablez[0.2/1.1] Spectroscopic redshiftsrc.redshiftfloatNMm[4/93] Number of cluster membersmeta.numberintSigc[386/1234] The rest-frame velocity dispersion of the clusterskm/sphys.veloc.dispersioninte_Sigc[52/555] Sigc uncertaintykm/sstat.errorintM200[0.4/18] Mass M_200_ in h_70_^-1^.10^14^M_{sun}_ unitsphys.massfloate_M200[0.2/4.2] M200 uncertaintystat.errorfloatr200[0.5/2.3] Virial radius r_200_ in h_70_^-1^Mpcphys.size.radiusfloate_r200[0.07/0.9] r200 uncertaintystat.errorfloatP-nu(DS)[0.02/0.3]? P-values of the DS test (4)stat.fit.goodnessfloatnullablee_P-nu(DS)[0.01/0.2]? Lower 68% confidence interval (4)stat.errorfloatnullableE_P-nu(DS)[0.03/0.1]? Upper 68% confidence interval (4)stat.error;stat.maxfloatnullableP-nu(KS)[0.04/1]? P-values of the KS test (5)stat.fit.goodnessfloatnullablee_P-nu(KS)[0.02/0.4]? Lower 68% confidence interval (5)stat.errorfloatnullableE_P-nu(KS)[0.03/0.3]? Upper 68% confidence interval (5)stat.error;stat.maxfloatnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharJ/ApJ/834/210/table2Spectroscopic redshift of individual lensed galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster lens designationmeta.id.parentcharGalLensed galaxy designation (1)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (2)pos.eq.dec;meta.mainz[0.7/2.9]? Spectroscopic redshiftsrc.redshiftfloatnullableq_z[0/3] Classification of the redshift measurement (3=highest confidence) (3)meta.code.qual;src.redshiftint