Open AccessNear‐infrared study of CIZA J1324.7‐5736, the second richest cluster of galaxies in the Great Attractor
Author(s) -
Nagayama T.,
Woudt P. A.,
Wakamatsu K.,
Nishiyama S.,
Nagashima C.,
Kato D.,
Nagata T.,
Nakaya H.,
Sugitani K.,
Tamura M.,
Sato S.
Publication year - 2006
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.10180.x
Subject(s) - physics , astrophysics , galaxy cluster , coma cluster , astronomy , brightest cluster galaxy , galaxy , galaxy groups and clusters , luminosity function , cluster (spacecraft) , luminosity , computer science , programming language
We present the result of a deep near‐infrared survey of the newly identified X‐ray luminous cluster of galaxies CIZA J1324.7‐5736 in the Great Attractor (GA) region. In a 35 × 35 arcmin 2 region, 111 galaxy candidates with r Ks 20> arcsec are identified. Comparison of the extinction‐corrected K s ‐band luminosity function of CIZA J1324.7‐5736 with those of nearby clusters indicates that the richness class of CIZA J1324.7‐5736 is almost the same as, or richer than, the Pavo, Centaurus and Hydra clusters but poorer than the Coma, Perseus and Norma clusters. CIZA J1324.7‐5736 is possibly the second richest cluster in the GA region following the Norma cluster. The position of CIZA J1324.7‐5736 [in the ( l , b , v ) space] is close to the Centaurus–Crux cluster and the agglomeration of galaxies detected by the Parkes H i survey. CIZA J1324.7‐5736, together with the Centaurus–Crux cluster and the H i galaxy agglomeration, is most likely to be one of the richest local concentrations in the GA overdensity of galaxies.