J/MNRAS/285/898ivo://CDS.VizieR/J/MNRAS/285/898doi:10.26093/cds/vizier.72850898CDSVenturi T.Bardelli S.Morganti R.Hunstead R.W.2024-06-25T20:17:41Z1998-08-31T17:09:00ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradio-sourcesWe have imaged the portion of the Shapley Concentration core surrounding the cluster A3556 at wavelengths of 36cm with the Molonglo Observatory Synthesis Telescope (MOST), and at 22 and 13cm with the Australia Telescope Compact Array (ATCA). We have defined a radio sample of 112 radio sources at 22cm. Cross-correlation with optical catalogues allowed the identification of 29 radio sources, nine of which belong to A3556. The radio and optical properties of A3556 have been studied in detail. Two extended radio sources are associated with cluster members, i.e. a narrow-angle-tail source located at a projected distance of 0.06R_A_ from the centre, possibly in the late stages of its existence, and a wide-angle-tail source at the periphery of the cluster. We also performed a statistical analysis of the cluster properties. The optical luminosity function shows that the cluster has an excess of bright optical galaxies. In agreement with well-established results, we found that the probability of radio emission increases for brighter galaxies. Furthermore, our radio luminosity function and those obtained for elliptical galaxies located in different environments (poor groups and rich clusters) are very similar, implying that the peculiar dynamical state of A3556 has no influence on the radio emission properties of the cluster galaxies.1997MNRAS.285..898Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/285/898CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/285/898https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/285/898http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/285/898https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/285/898https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/285/898http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/285/898GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/285/898/table3 (Source list and flux density values)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/285/898/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/285/898/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/285/898/table3?GETtext/xml+votable180.050000true200.252083-31.5883330.005555555555555556Cone search capability for table J/MNRAS/285/898/table4 (Radio and optical data for the optical identifications.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/285/898/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/285/898/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/285/898/table4?GETtext/xml+votable180.050000true200.320833-31.5086110.0055555555555555566/43833-43835 43838 43921 43923-43924https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/285/898?format=asciiRadiodefaultJ/MNRAS/285/898/table3Source list and flux density valuesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharprimarym_Name[ab] Multiplicity index on Namemeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainS22cm22cm flux density (1.4GHz)mJyphot.flux.density;em.radio.750-1500MHzfloatS13cm? 13cm flux density (2.3GHz)mJyphot.flux.density;em.radio.1500-3000MHzfloatnullableS36cm? 36cm flux density (0.83GHz)mJyphot.flux.density;em.radio.750-1500MHzfloatnullableMorphRadio morphology (1)src.morph.typecharn_Morph[a] Note on Morph (2)meta.notecharJ/MNRAS/285/898/table4Radio and optical data for the optical identifications.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRadio namemeta.id;meta.maincharprimaryRA2000Radio right ascension (2000)pos.eq.ra;meta.mainDE2000Radio declination signpos.eq.dec;meta.mainS22cm22cm flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatradTypeRadio type (1)src.spTypecharDRO? Difference between radio and optical centresarcsecpos.angDistancefloatnullablen_DRO[*] When *, see note (3)meta.notecharONameOptical namemeta.idcharRAoOptical right ascension (2000)pos.eq.raDEoOptical declination signpos.eq.decBjmagApparent b_J_ magnitudemagphot.mag;em.opt.Bfloatn_BjmagNote on Bjmag (2)meta.notecharoptTypeOptical typesrc.morph.typecharVel? Recession velocitykm/sphys.veloc;pos.heliocentricintnullablen_Vel[Q] Q: Velocities taken from Quintana et al. (1995, Cat. <J/AJ/110/463>).meta.notecharNote[*] When *, see note (3)meta.notechar