J/AJ/110/463ivo://CDS.VizieR/J/AJ/110/463doi:10.26093/cds/vizier.51100463CDSQuintana H.Ramirez A.Melnick J.Raychaudhury S.Slezak E.2023-04-06T16:50:19Z2000-04-15T19:56:41ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradial-velocityWe present a new analysis of the kinematics of the Shapley supercluster based on radial velocities for 1087 galaxies in the clusters A3558 (Shapley 8), A3528 (Klemola 21), A3532 (Klemola 22), A3530, A3556 (SC 1321-314), A3559 (CE 1327-292), A3560, A3562, SC 1329-314 and in the intercluster region of the core of the supercluster, of which 367 are new measurements. We also present accurate positions from APM and MAMA scans of the ESO/SERC Southern Sky Survey photographic plates. We obtain new velocity dispersions and estimate the masses of the member clusters, evaluating dynamical models of the supercluster. The supercluster is found to be significantly flattened. We find that for Omega_0=0.3, H_0=75km/s/Mpc, the gravitational pull of the supercluster may account for up to 25% of the peculiar velocity of the Local Group required to explain the dipole anisotropy of the Cosmic Microwave Background radiation, in which case the mass of the supercluster would be dominated by intercluster dark matter. This fractional contribution would be considerably higher for combinations of significantly lower values of Omega_0 and higher values of H_0.1995AJ....110..463Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/110/463CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/110/463https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/110/463http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/110/463https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/110/463https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/110/463http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/110/463GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/110/463/table2 (Galaxy velocities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/110/463/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/110/463/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/110/463/table2?GETtext/xml+votable180.050000true193.187632-31.2575870.0055555555555555565/10959 10992 6/43823 43830-43831 43833-43835 43874-43875 43880 43882 43909 43911 43916 43920-43922 43924-43925 43929 43932-43934 43937-43939 43945 43947-43948 43950 43953 43972 43976-439781.398457827073138e-19 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/110/463?format=asciiOpticaldefaultJ/AJ/110/463/table2Galaxy velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegionACO <VII/110> cluster name or cluster area code (1)meta.id;meta.maincharIDObserving identificationsmeta.id;obscharESO? ESO fieldmeta.noteintnullableCoordAPM, MAMA cat. numbers or other codes (2)meta.idcharRA1950Right ascension (1950)pos.eq.ra;meta.mainDE1950Declination (1950)pos.eq.dec;meta.mainu_RA1950Equatorial coordinate uncertainty flagmeta.code.error;pos.eq.racharCode[R:<( ] Codes for following fields (3)meta.notecharJmag? Ptg. J mag, measured from APM surveymagphot.mag;em.IR.JfloatnullableRVHeliocentric velocitieskm/sspect.dopplerVeloc;pos.heliocentricinte_RVHeliocentric velocities errorkm/sstat.errorintRR value or number of lines (4)meta.idcharRefCode for observer or velocity reference (5)meta.bibchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed