Physics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..329..177n&link_type=abstract
Nearby Large-Scale Structures and the Zone of Avoidance ASP Conference Series, Vol. 329, Proceedings of the Conference Held 28 M
Physics
1
Scientific paper
We present the results of deep near-infrared surveys around the giant radio elliptical galaxy PKS 1343-601 (36 arcmin × 36 arcmin) and of the X-ray cluster CIZA J1324.7-5736 (36 arcmin × 36 arcmin) in the Great Attractor region. They are both suggested to be unknown rich clusters related to the Great Attractor.
In the PKS 1343-601 region, 19 obvious galaxies have been detected; only three of them were previously identified as a galaxy. After extinction correction, the number density of galaxies brighter than 13 mag in the Ks band is 42 galaxies deg-2, five times as high as the over all average in the GA region. However, the number of galaxies in the central 270 kpc radius is less than that of the Norma, Pavo and Centaurus clusters, the known clusters in the GA region.
In the CIZA J1324.7-5736 region, we found 97 galaxies and prospective candidates, in which 35 objects are already known as galaxies in the WKK catalogue and/or the MASS Extended Source Catalogue. Our data analysis is not finished, but the subsequent study will reveal the richness of the CIZA J1324.7-5736 cluster.
Irsf/Sirius Team
Nagata Takahiro
Nagayama Taka
Sato Sasumu
Woudt Patrick A.
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