|Table of Contents|

Butcher-Oemler Effect for Galaxy Clusters in COSMOS Field

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2013年04期
Page:
54-
Research Field:
物理学
Publishing date:

Info

Title:
Butcher-Oemler Effect for Galaxy Clusters in COSMOS Field
Author(s):
Dang Qiangqiang; Yuan Qirong
School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China
Keywords:
cluster of galaxies; member galaxies; blue galaxies
PACS:
P141.2
DOI:
-
Abstract:
Clusters of galaxies are the largest virialized systems in the universe.Based on the photometric redshift database in the COSMOS field,we obtain a sample of 187 clusters,including a number of high-redshift clusters,which facilities the study on the evolution of blue galaxy fraction with cluster redshift.Taking the Subaru g+,r+,i+ magnitudes,we adopt three color criteria to select blue galaxies.A remarkable trend that the blue fration increases with redshift is found.The scattering of the BO effect is dependent upon the cluster richness.

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Memo

Memo:
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Last Update: 2013-12-30