The Universe Behind the Southern Milky Way
Abstract
A first analysis of a deep blind HI survey covering the southern Zone of Avoidance plus an extension towards the north (196° ≤ ℓ ≤ 52°) obtained with the Multibeam receiver at the 64 m Parkes telescope reveals slightly over a thousand galaxies within the latitude completeness limit of |b| ≤ 5°. The characteristics and the uncovered large-scale structures of this survey are described, in particular the prominence of the Norma Supercluster, the possible cluster around PKS 1343-601 (both in the Great Attractor region), as well as the Local Void and the clustering in the Puppis region. In this blind HI survey, HIZOA J0836-43, one of the most massive spiral galaxies known to date was discovered (M_{HI} = 7.3 \cdot 1010 M_⊙, MT = 1.1 \cdot 1012 M⊙; H0 = 75 km/s/Mpc). Although of similar mass as Malin 1-like objects,^Mthis galaxy does not share their typical low-surface brightness properties but seems an exceptionally massive but normal, high-surface brightness, star-forming galaxy.
- Publication:
-
Maps of the Cosmos
- Pub Date:
- January 2005
- DOI:
- 10.1017/S0074180900196640
- Bibcode:
- 2005IAUS..216..203K