J/A+A/337/17ivo://CDS.VizieR/J/A+A/337/17doi:10.26093/cds/vizier.33370017CDSAndreuzzi G.Bardelli S.Scaramella R.Zucca E.2003-06-13T18:40:54Z2003-06-13T18:40:42ZCDS 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 results of a spectroscopic survey of galaxies in an area between the two clusters of galaxies A548 and A3367, suspected to be a close and interacting pair. With the use of multifiber spectroscopy, we measured 180 new velocities of galaxies in the central part of A 3367 and in the external regions of A 548. The redshift histogram shows the presence of three velocity peaks, at v~12000km/s, v~30000km/s and v~40000km/s, respectively. For these we estimate the density excess, the mean velocity, and the velocity dispersion. The first clump corresponds to an elongation of A 548: in particular we found a correspondence between the features of this peak and the substructures of A 548. The second peak has a velocity dispersion which is typical of clusters and the distribution of its members on the plane of the sky corresponds to the highest density peak in A 3367. We therefore suggest that the name A 3367 has to be attributed to this clump. Our general conclusion is that, differently from expected, A 548 and A 3367 do not form a close pair of merging clusters, since the two structures are at significantly different redshifts. Moreover, we found that the complex dynamical structure of A 548 has large coherence, with a projected extension in the range of 1-3h^-1^Mpc.1998A&A...337...17Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/337/17CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/337/17https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/337/17http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/337/17https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/337/17https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/337/17http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/337/17GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/337/17/tables (Velocities (tables 2 to 7))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/337/17/tables?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/337/17/tables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/337/17/tables?GETtext/xml+votable180.050000true87.475-24.3888610.0055555555555555566/20705 20707-20708 20710 20713 20716https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/337/17?format=asciiOpticaldefaultJ/A+A/337/17/tablesVelocities (tables 2 to 7)FieldField designation (1)obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA2000Right ascension (2000)pos.eq.ra;meta.mainDE2000Declination (2000)pos.eq.dec;meta.mainbJb_J_ magnitudemagphot.mag;em.opt.BfloatHVabs? Absorption line heliocentric velocitykm/sphys.veloc;pos.heliocentricintnullablee_HVabs? rms uncertainty on HVabskm/sstat.errorintnullableHVem? Emission line heliocentric velocitykm/sphys.veloc;pos.heliocentricintnullablee_HVem? rms uncertainty on HVemikm/sstat.errorintnullableNote[abcd ] Presence of emission lines (2)meta.notechar