천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제37권2호
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- Pages.83.1-83.1
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- 2012
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- 1226-2692(pISSN)
Search for galaxy clusters in SA22
- Kim, Jae-Woo (CEOU/Dept. of Physics and Astronomy, Seoul National University) ;
- Im, Myungshin (CEOU/Dept. of Physics and Astronomy, Seoul National University) ;
- Hyun, Minhee (Dept. of Physics and Astronomy, Seoul National University)
- 발행 : 2012.10.17
초록
The galaxy cluster is a good laboratory to test the cosmological model as well as the evolution of galaxies in the dense region. However the lack of wide and deep near-IR datasets has prevented to identify galaxy clusters at z>1. Here we merge a wide, deep near-IR datasets of UKIDSS DXS (J and K bands) and IMS (J band) with the CFHT Legacy Survey (CFHTLS) ugriz catalogue to detect galaxy clusters. We identify candidate galaxy clusters at z>0.8, where the near-IR dataset plays an important role to detect galaxies efficiently. The cluster mass is also estimated based on the cluster richness and the semi-analytical cosmological simulation.
키워드