摘要
The survey data of Wide-field Infrared Survey Explorer(WISE)provide an opportunity for the identification of galaxy clusters.We present an efficient method for detecting galaxy clusters by combining the WISE data with SuperCOSMOS and 2MASS data.After performing star-galaxy separation,we calculate the number of companion galaxies around the galaxies with photometric redshifts previously estimated by the SuperCOSMOS,2MASS and WISE data.A scaled richness Rscal 30 is set as a criterion to identify clusters.From a sky area of 275 deg2of the Sloan Digital Sky Survey Stripe 82 region,we identify 302 clusters in the redshift range of 0.1<z<0.35,247(82%)of which are previously known SDSS clusters.The results suggest that our method is efficient for identifying galaxy clusters by using the all sky data of the SuperCOSMOS,2MASS and WISE.
The survey data of Wide-field Infrared Survey Explorer （WISE） provide an opportunity for the identification of galaxy clusters. We present an efficient method for detecting galaxy clusters by combining the WISE data with SuperCOSMOS and 2MASS data. After performing star-galaxy separation, we calculate the number of companion galaxies around the galaxies with photometric redshifts previously estimated by the SuperCOSMOS, 2MASS and WISE data. A scaled richness Rscal ≥30 is set as a criterion to identify clusters. From a sky area of 275 deg2 of the Sloan Digital Sky Survey Stripe 82 region, we identify 302 clusters in the redshift range of 0.1 〈 z 〈 0.35, 247 （82%） of which are previously known SDSS clusters. The results suggest that our method is efficient for identifying galaxy clusters by using the all sky data of the SuperCOSMOS, 2MASS and WISE.
基金
supported by the National Natural Science Foundation of China (Grant No.11103032)
the Young Researcher Grant of National Astronomical Observatories,Chinese Academy of Sciences
This publication makes use of data products from the Wide-field Infrared Survey Explorer,which is a joint project of the University of California,Los Angeles,and the Jet Propulsion Laboratory/California Institute of Technology,funded by the National Aeronautics and Space Administration
Funding for the SDSS and SDSS-Ⅱ has been provided by the Alfred P.Sloan Foundation,the Participating Institutions
the National Science Foundation
the U.S.Department of Energy,the National Aeronautics and Space Administration,the Japanese Monbukagakusho,the Max Planck Society,and the Higher Education Funding Council for England
