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Article: The large scale distribution of galaxies in the Shapley Supercluster
Title | The large scale distribution of galaxies in the Shapley Supercluster |
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Authors | |
Keywords | Subclustering Redshifts of galaxies Clusters of galaxies |
Issue Date | 2004 |
Citation | Publications of the Astronomical Society of Australia, 2004, v. 21, n. 1, p. 89-96 How to Cite? |
Abstract | We present new results of our wide-field redshift survey of galaxies in a 182 square degree region of the Shapley Supercluster (SSC) based on observations with the FLAIR-II spectrograph on the UK Schmidt Telescope (UKST). In this paper we present new measurements to give a total sample of redshifts for 710 bright (R ≤ 16.6) galaxies, of which 464 are members of the SSC (8000 < ν < 18 000 km s-1). Our data reveal that the main plane of the SSC (ν ≈ 14 500 km s-1) extends further than previously realised, filling the whole extent of our survey region of 10 degrees by 20 degrees on the sky (35 Mpc by 70 Mpc, for H0 = 75 km s-1 Mpc-1). There is also a significant structure associated with the slightly nearer Abell 3571 cluster complex (ν ≈ 12 000 km s-1) with a caustic structure evident out to a radius of 6 Mpc. These galaxies seem to link two previously identified sheets of galaxies and establish a connection with a third one at V̄ = 15 000 km s-1 near RA = 13h. They also tend to fill the gap of galaxies between the foreground Hydra-Centaurus region and the more distant SSC. We calculate galaxy overdensities of 5.0 ± 0.1 over the 182 square degree region surveyed and 3.3 ± 0.1 in a 159 square degree region excluding rich clusters. Over the large region of our survey the inter-cluster galaxies make up 46 per cent of all galaxies in the SSC region and may contribute a similar amount of mass to the cluster galaxies. © Astronomical Society of Australia 2004. |
Persistent Identifier | http://hdl.handle.net/10722/209050 |
ISSN | 2023 Impact Factor: 4.5 2023 SCImago Journal Rankings: 1.688 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Drinkwater, Michael J. | - |
dc.contributor.author | Parker, Quentin A. | - |
dc.contributor.author | Proust, Dominique | - |
dc.contributor.author | Slezak, Éric | - |
dc.contributor.author | Quintana, Hernán | - |
dc.date.accessioned | 2015-03-23T02:31:18Z | - |
dc.date.available | 2015-03-23T02:31:18Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Publications of the Astronomical Society of Australia, 2004, v. 21, n. 1, p. 89-96 | - |
dc.identifier.issn | 1323-3580 | - |
dc.identifier.uri | http://hdl.handle.net/10722/209050 | - |
dc.description.abstract | We present new results of our wide-field redshift survey of galaxies in a 182 square degree region of the Shapley Supercluster (SSC) based on observations with the FLAIR-II spectrograph on the UK Schmidt Telescope (UKST). In this paper we present new measurements to give a total sample of redshifts for 710 bright (R ≤ 16.6) galaxies, of which 464 are members of the SSC (8000 < ν < 18 000 km s-1). Our data reveal that the main plane of the SSC (ν ≈ 14 500 km s-1) extends further than previously realised, filling the whole extent of our survey region of 10 degrees by 20 degrees on the sky (35 Mpc by 70 Mpc, for H0 = 75 km s-1 Mpc-1). There is also a significant structure associated with the slightly nearer Abell 3571 cluster complex (ν ≈ 12 000 km s-1) with a caustic structure evident out to a radius of 6 Mpc. These galaxies seem to link two previously identified sheets of galaxies and establish a connection with a third one at V̄ = 15 000 km s-1 near RA = 13h. They also tend to fill the gap of galaxies between the foreground Hydra-Centaurus region and the more distant SSC. We calculate galaxy overdensities of 5.0 ± 0.1 over the 182 square degree region surveyed and 3.3 ± 0.1 in a 159 square degree region excluding rich clusters. Over the large region of our survey the inter-cluster galaxies make up 46 per cent of all galaxies in the SSC region and may contribute a similar amount of mass to the cluster galaxies. © Astronomical Society of Australia 2004. | - |
dc.language | eng | - |
dc.relation.ispartof | Publications of the Astronomical Society of Australia | - |
dc.subject | Subclustering | - |
dc.subject | Redshifts of galaxies | - |
dc.subject | Clusters of galaxies | - |
dc.title | The large scale distribution of galaxies in the Shapley Supercluster | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1071/AS03057 | - |
dc.identifier.scopus | eid_2-s2.0-8744243459 | - |
dc.identifier.volume | 21 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 89 | - |
dc.identifier.epage | 96 | - |
dc.identifier.isi | WOS:000189381300005 | - |
dc.identifier.issnl | 1323-3580 | - |