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Inter-cluster Filaments of Galaxies Programme: Pilot Study Survey and Results | | Kevin A. Pimbblet
; Michael J. Drinkwater
; | | Date: |
8 Sep 2003 | | Journal: | Mon.Not.Roy.Astron.Soc. 347 (2004) 137 | | Subject: | astro-ph | | Affiliation: | UQ | | Abstract: | We present results from a pilot study of a new wide-field, multicolour (BVR) CCD imaging project, designed to examine galaxy evolution along large scale filaments that connect clusters of galaxies at intermediate redshifts (0.08 < z < 0.20). Our pilot dataset is based on 0.56 square degrees of observations targeted on Abell 1079 and Abell 1084 using the Wide Field Imager on the Anglo-Australian Telescope. We describe our data reduction pipeline and show that our photometric error is 0.04 mags. By selecting galaxies that lie on the colour-magnitude relation of the two clusters we verify the existence of a low density (approx 3-4 square Mpc) filament population conjoining them at a distance of > 3 r_{Abell} from either cluster. By applying a simple field correction, we characterize this filament population by examining their colour distribution on a (V-R)-(B-V) plane. We confirm the galaxian filament detection at a 7.5 sigma level using a cut at M_V=-18 and we discuss their broad properties. | | Source: | arXiv, astro-ph/0309216 | | Services: | Forum | Review | PDF | Favorites | |
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