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Paper: Local Structures as Revealed by HIPASS
Volume: 329, Nearby Large-Scale Structures and the Zone of Avoidance
Page: 217
Authors: Koribalski, B.S.
Abstract: The HI Parkes All-Sky Survey (HIPASS) gives an unprecedented view of the local large-scale structures in the southern sky. I will review the results from the HIPASS Bright Galaxy Catalogue (BGC, Koribalski et al. 2004) and the first version of the deep catalogue (HICAT, Meyer et al. 2004) with particular emphasis on galaxy structures across the Zone of Avoidance. Some previously hardly noticed galaxy groups stand out quite distinctively in the HI sky distribution and several large-scale structures are seen for the first time. Because HI surveys preferentially detect late-type spiral and dwarf galaxies, their distribution is less clustered than that of optically selected galaxies. HI surveys also significantly enhance the connectivity of large-scale filaments by filling in gaps populated by gas-rich galaxies.
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