J/ApJ/863/102ivo://CDS.VizieR/J/ApJ/863/102doi:10.26093/cds/vizier.18630102CDSLiu A.Yu H.Diaferio A.Tozzi P.Hwang Ho S.Umetsu K.Okabe N.,Yang L.-L.2021-01-25T10:36:15Z2019-09-17T08:12:34ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesspectroscopyredshiftedvisible-astronomysloan-photometryTo investigate the dynamics of the galaxy cluster A2142, we compile an extended catalog of 2239 spectroscopic redshifts of sources, including 237 newly measured redshifts, within 30 arcmin from the cluster center. With the {sigma}-plateau algorithm from the caustic method, we identify 868 members and a number of substructures in the galaxy distribution both in the outskirts, out to ~3.5Mpc from the cluster center, and in the central region. In the outskirts, one substructure overlaps a falling clump of gas previously identified in the X-ray band. These substructures suggest the presence of multiple minor mergers, which are responsible for the complex dynamics of A2142, and the absence of recent or ongoing major mergers. We show that the distribution of the galaxies in the cluster core and in several substructures is consistent with the mass distribution inferred from the weak-lensing signal. Moreover, we use spatially resolved X-ray spectroscopy to measure the redshift of different regions of the intracluster medium within ~3 arcmin from the cluster center. We find a ring of gas near the two X-ray cold fronts identified in previous analyses and measure a velocity of this ring of 810+/-330km/s larger than the cluster mean velocity. Our analysis suggests the presence of another ring surrounding the core, whose velocity is 660+/-300km/s larger than the cluster velocity. These X-ray features are not associated with any optical substructures, and support the core-sloshing scenario suggested in previous work.2018ApJ...863..102Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/863/102CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/741/122 : Redshifts in A2142 and RXJ1720.1+2638 (Owers+, 2011)J/MNRAS/436/275 : Relaxation param. of 2092 rich galaxy clusters (Wen+, 2013)J/ApJS/213/35 : SHELS: galaxy redshift survey for R<=20.6 (Geller+, 2014)J/ApJ/797/106 : Redshifts in nine galaxy cluster fields (Hwang+, 2014)J/A+A/579/A4 : MCS J1206.2-0847 gal. spectral classif. (Girardi+, 2015)J/ApJS/224/11 : SHELS: redshift survey of the F1 DLS field (Geller+, 2016)J/A+A/600/A90 : MACS J0416.1-2403 redshift catalogue (Caminha+, 2017)J/A+A/607/A131 : Abell 520 galaxies redshifts (Deshev+, 2017)J/MNRAS/465/2616 : Galaxy cluster's rotation (Manolopoulou+, 2017)J/ApJ/842/88 : A redshift survey of A2199 central region (Song+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/863/102https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/863/102http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/863/102https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/863/102https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/863/102http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/863/102GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/863/102/table1 (Redshift catalog in the fields of Abell 2142)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/863/102/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/863/102/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/863/102/table1?GETtext/xml+votable180.050000true238.9867180627.3555950.0055555555555555566/8671 8693 9354 9376https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/863/102?format=asciiOpticaldefaultJ/ApJ/863/102/table1Redshift catalog in the fields of Abell 2142SimbadNameSimbad column added by the CDSmeta.idcharSeq[1/2239] Internal object identifiermeta.id;meta.mainintDEJ2000[26.6/27.8] Declination (J2000)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[238.98/240.21] Right Ascension (J2000)degpos.eq.ra;meta.mainObjIDSDSS DR13/DR7 identifier (1)meta.idrmag[9.2/22.7] SDSS r-band Petrosian magnitude corrected for Galactic extinctionmagphot.mag;em.opt.Rfloatz[-0.002/6.2] Spectroscopic redshiftsrc.redshiftdoublee_z[1e-05/1.2] Uncertainty in zstat.error;src.redshiftdoubler_zReference for z (2)meta.ref;pos.framecharMmMembership given by the caustic method ("Y": 868 occurrences)meta.code.member;stat.fitcharO11Display data from Owers+, 2011, J/ApJ/741/122 within 0.5"meta.ref.urlintnullableSloanDisplay the SDSS data for this objectmeta.ref.urlchar