J/MNRAS/316/326ivo://CDS.VizieR/J/MNRAS/316/326doi:10.26093/cds/vizier.73160326CDSHasegawa T.Wakamatsu K.-I.Malkan M.Sekiguchi K.Menzies J.W.,Parker Q.A.Jugaku J.Karoji H.Okamura S.2024-06-26T20:16:35Z2004-06-06T07:33:30ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedThe large-scale structure around the Ophiuchus cluster of galaxies in the vicinity of the Galactic Centre (l=0.5{deg}, b=9.5{deg}, cz=8500km/s) is investigated on the basis of a galaxy survey and spectroscopic observations made for a 120{deg}x170{deg} area. The galaxy survey was performed using six ESO/SERC Sky Survey Atlas films, and 4021 galaxies were detected in total. Recession velocities were newly obtained for 179 galaxies to make the total number of galaxies in the survey area with known velocities 219. In the distribution of bright galaxies, we identified seven new clumps of galaxies. Comparing the surface number density of bright galaxies with the Galactic extinction, which is estimated from the 100-{mu}m flux density in the IRAS Sky Survey Atlas, we demonstrate that the seven clumps are not spurious as a result of the inhomogeneity of the Galactic extinction. Among the seven clumps, two are found to be clusters and four to be groups on the basis of the histogram of recession velocities and the number of member galaxies. The Ophiuchus cluster, two newly identified clusters, and four groups are all concentrated at 9000km/s. Field galaxies are also distributed centred at 8500km/s. Hence field galaxies occupy a common three-dimensional region with galaxies in the clusters and groups, and altogether they form a large-scale structure of supercluster size. As opposed to the overdensity in the supercluster region, the mean number density of galaxies in the velocity range 0-5000km/s is only 25 per cent of the mean number density of the Universe, comparable with the density of the well-known Bootes void. Hence this nearby three-dimensional region in Ophiuchus is a void of galaxies also.2000MNRAS.316..326Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/316/326CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/110/269 : Galaxies in the "zone of avoidance". I. (Weinberger+, 1995)J/A+AS/117/1 : Galaxies in the "zone of avoidance". II. (Seeberger+, 1996)J/A+AS/117/369 : Galaxies in the "zone of avoidance". III. (Lercher+, 1996)J/A+AS/126/247 : Galaxies in the "zone of avoidance". IV. (Saurer+, 1997)J/A+AS/127/101 : Galaxies in the "zone of avoidance". V. (Seeberger+ 1998)J/A+AS/137/293 : ZOAG galaxies in 115{deg}<l<157{deg} (Weinberger+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/316/326https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/316/326http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/316/326https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/316/326https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/316/326http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/316/326GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/316/326/tablec1 (Summary of the redshift data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/316/326/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/316/326/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/316/326/tablec1?GETtext/xml+votable180.050000true249.42625-21.4458330.0055555555555555565/7305 7330 7332 7334 7336 7344 6/29188 29197-29199 29210 29216 29218-29219 29228 29230 29232 29234 29238 29240 29242-29243 29245 29247 29288 29290-29291 29294 29317-29319 29325 29327 29332 29334-29335 29340-29342 29348-29350 29360-29361 29364-29366 29368 29380 29386 42827 42829 42832 42844 42846 42849 42851-42852 42855 42866-42869 42873-42876 42878 42960 42964 42966 42973 42999https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/316/326?format=asciiOpticaldefaultJ/MNRAS/316/326/tablec1Summary of the redshift datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOPHIdentification namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSize? Size of the objectarcminphys.angSize;srcfloatnullableMC? 5-step magnitude class (1)meta.code.classintnullableMTypeMorphological typesrc.morph.typecharczRedshiftkm/ssrc.redshiftinte_cz? rms uncertainty on czkm/sstat.errorintnullablef100IRAS Sky Survey Atlas (ISSA) flux density in the object direction (2)MJy/srphot.flux.density;em.IR.60-100umfloatNameCross-Identification of the object (3)meta.id.crosschar