The Universe Behind the Southern Milky Way

Details The Universe Behind the Southern Milky Way The Universe Behind the Southern Milky Way

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iaus..216..203k&link_type=abstract

Maps of the Cosmos, Proceedings of IAU Symposium No. 216, held during the IAU General Assembly XXV in Sydney, Australia, 14-17 J

Astronomy and Astrophysics

Astronomy

11

Scientific paper

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_&sun;, MT = 1.1 \cdot 1012 M&sun;; 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.

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