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Substructure and Dynamics of the Fornax Cluster

Drinkwater, Michael J; Gregg, Michael D; Colless, Matthew


We present the first dynamical analysis of a galaxy cluster to include a large fraction of dwarf galaxies. Our sample of 108 Fornax Cluster members measured with the UK Schmidt Telescope FLAIR-II spectrograph contains 55 dwarf galaxies (15.5>bJ>18.0 or -16>MB>-13.5). Hα emission shows that 36%+/-8% of the dwarfs are star forming, twice the fraction implied by morphological classifications. The total sample has a mean velocity of 1493+/-36 km s-1 and a velocity dispersion of 374+/-26 km s-1. The...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Astrophysical Journal, The


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