The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
권호 표지

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)
  • Published : 2012.10.17
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords