Structure and dynamics of the Shapley Supercluster -: Velocity catalogue, general morphology and mass

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dc.contributor.authorProust, D
dc.contributor.authorQuintana, H
dc.contributor.authorCarrasco, ER
dc.contributor.authorReisenegger, A
dc.contributor.authorSlezak, E
dc.contributor.authorMuriel, H
dc.contributor.authorDünner, R
dc.contributor.authorSodre, L
dc.contributor.authorDrinkwater, MJ
dc.contributor.authorParker, QA
dc.contributor.authorRagone, CJ
dc.date.accessioned2025-01-21T01:06:25Z
dc.date.available2025-01-21T01:06:25Z
dc.date.issued2006
dc.description.abstractWe present results of our wide-field redshift survey of galaxies in a 285 square degree region of the Shapley Supercluster (SSC), based on a set of 10 529 velocity measurements (including 1201 new ones) on 8632 galaxies obtained from various telescopes and from the literature. Our data reveal that the main plane of the SSC (v approximate to 14 500 km s(-1)) extends further than previous estimates, filling the whole extent of our survey region of 12 degrees by 30 degrees on the sky (30 x 75 h(-1) Mpc). There is also a connecting structure associated with the slightly nearer Abell 3571 cluster complex (v approximate to 12 000 km s(-1)). These galaxies seem to link two previously identified sheets of galaxies and establish a connection with a third one at v = 15 000 km s(-1) near RA = 13(h). They also tend to fill the gap of galaxies between the foreground Hydra-Centaurus region and the more distant SSC. In the velocity range of the Shapley Supercluster (9000 km s(-1) < cz < 18 000 km s(-1)), we found redshift-space overdensities with b(j) < 17.5 of similar or equal to 5.4 over the 225 square degree central region and similar or equal to 3.8 in a 192 square degree region excluding rich clusters. Over the large region of our survey, we find that the intercluster galaxies make up 48 per cent of the observed galaxies in the SSC region and, accounting for the different completeness, may contribute nearly twice as much mass as the cluster galaxies. In this paper, we discuss the completeness of the velocity catalogue, the morphology of the supercluster, the global overdensity, and some properties of the individual galaxy clusters in the Supercluster.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:20052838
dc.identifier.issn1432-0746
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20052838
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96152
dc.identifier.wosidWOS:000234957400013
dc.issue.numero1
dc.language.isoen
dc.pagina.final144
dc.pagina.inicio133
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgalaxies : clusters : individual : Shapley Supercluster
dc.subjectgalaxies : clusters : individual : A 3558
dc.subjectgalaxies : distances and redshifts
dc.subjectcosmology : observations
dc.subjectcosmology : large-scale structure of Universe
dc.subjectgalaxies : clusters : general
dc.titleStructure and dynamics of the Shapley Supercluster -: Velocity catalogue, general morphology and mass
dc.typeartículo
dc.volumen447
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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