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Title:
Large-scale velocity flow in the Horologium-Reticulum supercluster
Authors:
Fleenor, Matthew C.; Rose, James A.; Christiansen, Wayne A.; Hunstead, Richard W.; Johnston-Hollitt, Melanie; Drinkwater, Michael J.
Publication:
Outskirts of Galaxy Clusters: Intense Life in the Suburbs. Edited by Antonaldo Diaferio, IAU Colloquium #195, p.89-91
Publication Date:
07/2004
Origin:
CUP
Comment:
ISBN: 052184908X
DOI:
10.1017/S1743921304000195
Bibliographic Code:
2004ogci.conf...89F

Abstract

We present results from 547 optical galaxy redshifts obtained in the region of Horologium-Reticulum (HR) using the 6dF (six-degree field) multi-fiber spectrograph on the United Kingdom Schmidt Telescope. Concentrating upon the inter-cluster regions of the HR Supercluster (HRS), we derive three primary results from our 6dF observations. First, the HRS covers a redshift range from at least 16000 to 22500 kms[minus sign]1. Second, these HRS galaxies exhibit an overall gradient with increasing redshift along a spatial axis of SE-NW with high statistical probability. Third, along the best-fit line from the spatial-redshift linear regression, HRS galaxies comprising the redshift trend are distinctly split into a high- and low-redshift component. Finally, comparisons of the spatial-redshift distribution are made between the HRS and the Shapley supercluster.

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