Multicolor photometry of the nearby galaxy cluster A119

	Multicolor photometry of the nearby galaxy cluster A119
	Tian, Jin-Tao 1,2; Yuan, Qi-Rong 3; Zhou, Xu1 ; Jiang, Zhao-Ji 1; Ma, Jun1 ; Wu, Jiang-Hua 4; Wu, Zhen-Yu1 ; Fan, Zhou1 ; Zhang, Tian-Meng1 ; Zou, Hu1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2012-10-01
卷号	12 期号:10 页码:1381-1401
关键词	galaxies: clusters: individual (A119) galaxies: distances and redshifts galaxies: evolution galaxies: kinematics and dynamics methods: data analysis
英文摘要	This paper presents multicolor optical photometry of the nearby galaxy cluster Abell 119 (z = 0.0442) with the Beijing-Arizona-Taiwan-Connecticut system of 15 intermediate bands. Within the BATC field of view of 58' x 58', there are 368 galaxies with known spectroscopic redshifts, including 238 member galaxies (called sample I). Based on the spectral energy distributions of 1376 galaxies brighter than (i)BATC = 19.5, the photometric redshift technique and the color-magnitude relation of early-type galaxies are applied to select faint member galaxies. As a result, 117 faint galaxies were selected as new member galaxies. Combined with sample I, an enlarged sample (called sample II) of 355 member galaxies is obtained. Spatial distribution and localized velocity structure for two samples demonstrate that A119 is a dynamically complex cluster with at least three prominent substructures in the central region within 1 Mpc. A large velocity dispersion for the central clump indicates a merging along the line of sight. No significant evidence for morphology or luminosity segregations is found in either sample. With the PEGASE evolutionary synthesis model, the environmental effect on the properties of star formation is confirmed. Faint galaxies in the low-density region tend to have longer time scales of star formation, smaller mean stellar ages, and lower metallicities in their interstellar medium, which is in agreement with the context of the hierarchical cosmological scenario.
收录类别	SCI
语种	英语
WOS记录号	WOS:000310476800002
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6093]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Tian, Jin-Tao,Yuan, Qi-Rong,Zhou, Xu,et al. Multicolor photometry of the nearby galaxy cluster A119[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(10):1381-1401.
APA	Tian, Jin-Tao.,Yuan, Qi-Rong.,Zhou, Xu.,Jiang, Zhao-Ji.,Ma, Jun.,...&Zou, Hu.(2012).Multicolor photometry of the nearby galaxy cluster A119.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(10),1381-1401.
MLA	Tian, Jin-Tao,et al."Multicolor photometry of the nearby galaxy cluster A119".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.10(2012):1381-1401.