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Paper: Deep Near-Infrared Survey of PKS1343-601 and CIZA J1324.7-5736
Volume: 329, Nearby Large-Scale Structures and the Zone of Avoidance
Page: 177
Authors: Nagayama, T.; Nagata, T.; Sato, S.; Woudt, P.A.; IRSF/SIRIUS team
Abstract: We present the results of deep near-infrared surveys around the giant radio elliptical galaxy PKS1343−601 (36′ × 36′) and of the X-ray cluster CIZA J1324.7−5736 (36′ × 36′) in the Great Attractor region. They are both suggested to be unknown rich clusters related to the Great Attractor.

In the PKS1343−601 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 2MASS Extended Source Catalogue. Our data analysis is not finished, but the subsequent study will reveal the richness of the CIZA J1324.7−5736 cluster.

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