J/ApJ/882/69ivo://CDS.VizieR/J/ApJ/882/69doi:10.26093/cds/vizier.18820069CDSGolovich N.Dawson W.A.Wittman D.M.van Weeren R.J.Andrade-Santos F.,Jee M.J.Benson B.de Gasperin F.Venturi T.Bonafede A.Sobral D.,Ogrean G.A.Lemaux B.C.Bradac M.Bruggen M.Peter A.2021-04-27T12:07:35Z2021-03-03T07:30:51ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedradio-continuum-emissionx-ray-sourcesGolovich et al. (2019, J/ApJS/240/39) present an optical imaging and spectroscopic survey of 29 radio relic merging galaxy clusters. In this paper, we study this survey to identify substructure and quantify the dynamics of the mergers. Using a combined photometric and spectroscopic approach, we identify the minimum number of substructures in each system to describe the galaxy populations and estimate the line-of-sight velocity difference between likely merging subclusters. We find that the line-of-sight velocity components of the mergers are typically small compared with the maximum 3D relative velocity (usually <1000km/s and often consistent with zero). We also compare our systems to n-body simulation analogs and estimate the viewing angle of the clean mergers in our ensemble. We find that the median system's separation vector lies within 40{deg} (17{deg}) at a 90% (50%) confidence level. This suggests that the merger axes of these systems are generally in or near the plane of the sky, matching findings in magnetohydrodynamical simulations. In 28 of the 29 systems we identify substructures in the galaxy population aligned with the radio relic(s) and presumed associated merger-induced shock. From this ensemble, we identify eight systems to include in a "gold" sample that is prime for further observation, modeling, and simulation study. Additional papers will present weak-lensing mass maps and dynamical modeling for each merging system, ultimately leading to new insight into a wide range of astrophysical phenomena at some of the largest scales in the universe.2019ApJ...882...69Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/882/69CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/79 : The VLA Low-frequency Sky Survey at 74MHz (Cohen+ 2007)VIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)J/A+AS/124/283 : BR magnitude and redshift of A1300 (Pierre+ 1997)J/A+AS/124/259 : Westerbork Northern Sky Survey I. (Rengelink+ 1997)J/MNRAS/292/419 : Cooling flows in 207 clusters of galaxies (White+, 1997)J/ApJS/122/51 : Spectroscopy of 10 rich galaxy clusters (Dressler+ 1999)J/ApJ/580/774 : X-ray cluster of galaxies behind the MW (Ebeling+, 2002)J/AJ/124/1918 : MX northern Abell cluster z survey. II. (Miller+, 2002)J/A+A/392/795 : Multi-wavelength obs. of 2 gal. clusters (Valtchanov+, 2002)J/MNRAS/339/913 : Two distant massive clusters of galaxies (Edge+, 2003)J/A+A/399/813 : Multiple merging events in Abell 521 (Ferrari, 2003)J/AJ/125/2427 : 1.4GHz flux densities of Abell 2255 galaxies (Miller+, 2003)J/ApJS/149/53 : Multicolor photometry of A2255 galaxies (Yuan+, 2003)J/AJ/132/1275 : CIRS (Cluster Infall Regions in the SDSS). I. (Rines+, 2006)J/A+A/471/17 : SDSS-DR4 nearby clusters global properties (Aguerri+, 2007)J/A+A/469/861 : Radial velocities of A115 galaxies (Barrena+, 2007)J/ApJ/662/224 : Second CIZA subsample (Kocevski+, 2007)J/A+A/481/593 : Radial velocities in A2163 (Maurogordato+, 2008)J/A+A/503/357 : Redhift catalog of A1237+A1240 galaxies (Barrena+, 2009)J/A+A/521/A78 : Velocities in the A2345 cluster (Boschin+, 2010)J/MNRAS/404/325 : Massive galaxy clusters lensing analyse (Richard+, 2010)J/ApJ/728/27 : Chandra & AAOmega observations of Abell 2744 (Owers+, 2011)J/A+A/536/A8 : Planck early results. VIII. ESZ sample. (Planck+, 2011)J/A+A/542/A36 : Rich clusters from SDSS DR8 (Einasto+, 2012)J/ApJS/199/25 : CLASH sources for MACS1149.6+2223 (Postman+, 2012)J/MNRAS/434/772 : Velocities in ZwCl2341.1+0000 field (Boschin+, 2013)J/ApJ/772/131 : Musket Ball Cluster redshift catalog (Dawson, 2013)J/A+A/555/A110 : Radio images of CIZA J2242.8+5301 (Stroe+, 2013)J/A+A/551/A24 : GMRT Radio Halo Cluster Survey (Venturi+, 2013)J/ApJS/211/21 : Spectroscopic redshifts of galaxies in MACS (Ebeling+, 2014)J/ApJS/213/35 : SHELS: complete galaxy redshift survey (Geller+, 2014)J/ApJ/805/143 : MC2: redshift analysis of CIZA J2242.8+5301 (Dawson+, 2015)J/MNRAS/452/1437 : Abell 2744 strong-lensing analysis (Jauzac+, 2015)J/MNRAS/450/630 : MC2: SFR in CIZA J2242.8+5301 (Sobral+, 2015)J/MNRAS/456/2829 : Radial velocities of galaxies in A523 field (Girardi+, 2016)J/ApJ/819/114 : HFF clusters' strong lensing mass modeling (Kawamata+, 2016)J/ApJ/817/60 : Multiply imaged supernova Refsdal (Treu+, 2016)J/ApJ/841/7 : Spectroscopic obs & ZwCl 2341+0000 members (Benson+, 2017)J/ApJ/838/110 : Spectroscopic survey of ZwCl 0008.8+5215 (Golovich+, 2017)J/MNRAS/468/1917 : Concentration parameter of galaxy clusters (Rossetti+, 2017)J/MNRAS/473/663 : MUSE and HFFs Photometry of A2744 (Mahler+, 2018)J/ApJS/240/39 : Merging galaxy cluster deep observations (Golovich+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/882/69https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/882/69http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/882/69https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/882/69https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/882/69http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/882/69GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/882/69/clusters (The merging cluster collaboration radio-selected (Table 1) and the ancillary radio and X-ray data utilized in this paper (Table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/882/69/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/882/69/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/882/69/clusters?GETtext/xml+votable180.050000true90.80583342.2086110.0055555555555555566/2812 4965 5483 6039 6827 7221 9007 9072 9168 9588 11591 13804 14225 16024 16486 18779 19451 19935 21061 22607 23384 24735 25188 26166 28448 30946 40564 44008 48966https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/882/69?format=asciiX-rayRadiodefaultJ/ApJ/882/69/clustersThe merging cluster collaboration radio-selected (Table 1) and the ancillary radio and X-ray data utilized in this paper (Table 2)SimbadNameSimbad column added by the CDSmeta.idcharz[0.07/0.55] Redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharNhNumber of halo components for this cluster (link to Table 3)meta.numberintnullableIDAbbreviated identifiermeta.idcharprimaryRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainBandDiscovery wavelength rangeinstr.bandwidthcharNote[5.1/5.9] Section in the paper in which the source is detailedmeta.notefloatRadRadio imageinstr.bandpasscharRefRadio reference (author)meta.refcharBibCodeRadio reference (bibcode)meta.refcharTelX-ray telescopeinstr.telcharExp[12/411] Exposure timekstime.duration;obs.exposureintNEDNED column added by the CDSmeta.ref.urlcharJ/ApJ/882/69/table3Priors for potential subclusters as deemed such by the routine discussed in Section 4.3 for 29 merging clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster abbreviated identifiermeta.id;meta.maincharHaloHalo componentmeta.code.multipcharlowerX[-1.4/1.2] Lower X range value (1)Mpcpos.cartesian.x;stat.minfloatupperX[-1.1/1.4] Upper X range value (1)Mpcpos.cartesian.x;stat.maxfloatlowerY[-2.5/1.3] Lower Y range value (1)Mpcpos.cartesian.y;stat.minfloatupperY[-2.0/1.5] Upper Y range value (1)Mpcpos.cartesian.y;stat.maxfloatlowerZ[-2.5/2.5] Lower z range value (1)1000km/sphys.veloc;stat.minfloatupperZ[-1.3/3.5] Upper z range value (1)1000km/sphys.veloc;stat.maxfloatJ/ApJ/882/69/table4MCMC-3D Gaussian mixture model (GMM) models run for each system in our ensemblerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster abbreviated identifiermeta.id;meta.maincharMod[1/27] Model numbermeta.idintHaloHalo(s) included in the model (- = unimodal)meta.code.multipcharNbkg[0/322] Number of galaxies assigned to background modelmeta.numberintAccept[0.04/0.3] Acceptance valuestat.paramfloatDiff[0/444]? The BIC-BIC_min_ value (1)stat.paramfloatnullable