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Article: New Structure in the Shapley Supercluster

TitleNew Structure in the Shapley Supercluster
Authors
KeywordsGALAXY CLUSTERS
DISTANCES AND REDSHIFTS
LARGE-SCALE STRUCTURE OF UNIVERSE
galaxies: clusters
distances and redshifts
large-scale structure of universe
Issue Date1999
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=pas
Citation
Publications of the Astronomical Society of Australia, 1999, v. 16, p. 113-123 How to Cite?
AbstractWe present new radial velocities for 306 bright (R < 16) galaxies in a 77 deg2 region of the Shapley supercluster, measured with the FLAIR-II spectrograph on the UK Schmidt Telescope. The galaxies we measured were uniformly distributed over the survey area, in contrast to previous samples which were concentrated in several rich Abell clusters. Most of the galaxies (230) were members of the Shapley supercluster: they trace out two previously unknown sheets of galaxies linking the Abell clusters of the supercluster. In a 44 deg2 area of the supercluster excluding the Abell clusters, these sheets alone represent an overdensity of a factor of 2.0 ± 0.2 compared to a uniform galaxy distribution. The supercluster is not flattened in the Declination direction as has been suggested in previous papers. Within our survey area the new galaxies contribute an additional 50% to the known contents of the Shapley supercluster, with a corresponding increase in its contribution to the motion of the Local Group.
Persistent Identifierhttp://hdl.handle.net/10722/211184
ISSN
2015 SCImago Journal Rankings: 1.782

 

DC FieldValueLanguage
dc.contributor.authorDrinkwater, MJ-
dc.contributor.authorProust, D-
dc.contributor.authorParker, QA-
dc.contributor.authorQuintana, H-
dc.contributor.authorSlezak, E-
dc.date.accessioned2015-07-08T03:22:45Z-
dc.date.available2015-07-08T03:22:45Z-
dc.date.issued1999-
dc.identifier.citationPublications of the Astronomical Society of Australia, 1999, v. 16, p. 113-123-
dc.identifier.issn1448-6083-
dc.identifier.urihttp://hdl.handle.net/10722/211184-
dc.description.abstractWe present new radial velocities for 306 bright (R < 16) galaxies in a 77 deg<SUP>2</SUP> region of the Shapley supercluster, measured with the FLAIR-II spectrograph on the UK Schmidt Telescope. The galaxies we measured were uniformly distributed over the survey area, in contrast to previous samples which were concentrated in several rich Abell clusters. Most of the galaxies (230) were members of the Shapley supercluster: they trace out two previously unknown sheets of galaxies linking the Abell clusters of the supercluster. In a 44 deg<SUP>2</SUP> area of the supercluster excluding the Abell clusters, these sheets alone represent an overdensity of a factor of 2.0 ± 0.2 compared to a uniform galaxy distribution. The supercluster is not flattened in the Declination direction as has been suggested in previous papers. Within our survey area the new galaxies contribute an additional 50% to the known contents of the Shapley supercluster, with a corresponding increase in its contribution to the motion of the Local Group.-
dc.languageeng-
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=pas-
dc.relation.ispartofPublications of the Astronomical Society of Australia-
dc.subjectGALAXY CLUSTERS-
dc.subjectDISTANCES AND REDSHIFTS-
dc.subjectLARGE-SCALE STRUCTURE OF UNIVERSE-
dc.subjectgalaxies: clusters-
dc.subjectdistances and redshifts-
dc.subjectlarge-scale structure of universe-
dc.titleNew Structure in the Shapley Supercluster-
dc.typeArticle-
dc.identifier.emailParker, QA: quentinp@hku.hk-
dc.identifier.authorityParker, QA=rp02017-
dc.identifier.volume16-
dc.identifier.spage113-
dc.identifier.epage123-

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