Photometric and spectroscopic study of Abell 0671
文献类型：期刊论文
| 作者 | Pan, Zhizheng1; Yuan, Qirong2; Kong, Xu1; Fan, Dongxin3; Zhou, Xu4 ; Lin, Xuanbin1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2012-03-01 |
| 卷号 | 421期号:1页码:36-49 |
| 关键词 | galaxies: clusters: individual: A671 galaxies: distance and redshifts galaxies: evolution galaxies: kinematics and dynamics |
| 英文摘要 | In this paper, we present a photometric and spectroscopic study of the nearby galaxy cluster Abell 0671 (A671) with 15 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) system, and using Sloan Digital Sky Survey (SDSS) data. After a cross-identification between the photometric data obtained from the BATC and SDSS, we obtain a list of 985 galaxies down to V similar to 20.0 mag in a field of view of 58 x 58 arcmin(2), including 103 spectroscopically confirmed member galaxies. The photometric redshift technique is applied to the galaxy sample to determine further membership. After the colour-magnitude relation is taken into account, 97 galaxies brighter than h(BATC) = 19.5 mag are selected as new member galaxies. Based on the enlarged sample of cluster galaxies, the spatial distribution and dynamics of A671 are investigated. The substructures of A671 are clearly shown by the sample of bright members. However, the substructures appear less significant based on the enlarged sample, which is mainly a result of larger uncertainties in the line-of-sight velocities of the newly selected faint members. The SDSS r-band luminosity function of A671 is flat at faint magnitudes, with the faint-end slope parameter alpha = -1.12. The SDSS spectra allow us to investigate the star formation history of bright cluster galaxies. The galaxies in the core region are found to be older than those in the outskirts. No environmental effect is found for metallicities of the early-type galaxies (ETGs). Both mean stellar ages and metallicities in the bright member galaxies are found to be correlated strongly with their stellarmasses assembled, and such correlations are dependent upon morphology. The positive correlation between age and stellar mass supports the downsizing scenario. By comparing the absorption-line indices of ETGs with state-of-the-art stellar population models, we derive the relevant parameters of the simple stellar population (such as age, [Fe/H], [Mg/Fe], [C/Fe], [N/Fe] and [Ca/Fe]). The ETGs at the cluster centre tend to have smaller H beta indices, indicating that central ETGs are likely to be older. The distribution of the total metallicity indicator, [MgFe] , does not show any environmental effects. The relations between the simple stellar population parameters and the velocity dispersion in A671 are in good agreement with previous studies. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000302693600034 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6307]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China 2.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 3.Guangxi Teachers Educ Univ, Dept Phys & Elect, Nanning 530001, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Zhizheng,Yuan, Qirong,Kong, Xu,et al. Photometric and spectroscopic study of Abell 0671[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,421(1):36-49. |
| APA | Pan, Zhizheng,Yuan, Qirong,Kong, Xu,Fan, Dongxin,Zhou, Xu,&Lin, Xuanbin.(2012).Photometric and spectroscopic study of Abell 0671.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,421(1),36-49. |
| MLA | Pan, Zhizheng,et al."Photometric and spectroscopic study of Abell 0671".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 421.1(2012):36-49. |
入库方式： OAI收割
来源：国家天文台
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