A Study of Binary Stellar Population Synthesis of Elliptical Galaxies
文献类型：期刊论文
| 作者 | Zhongmu Li; Fenghui Zhang; Zhanwen Han |
| 刊名 | Chinese Journal of Astronomy and Astrophysics
 |
| 出版日期 | 2006 |
| 卷号 | 6期号:6页码:669 |
| ISSN号 | 1009-9271 |
| 英文摘要 | We determined the relative stellar ages and metallicities of about 80 elliptical galaxies in both low and high density environments using the latest binary stellar population (BSP) synthesis model and tested the predictions of a recent hierarchical formation model that adopted the new ACDM cosmology.The stellar ages and metallicities were estimated from two high-quality published spectra line indices, the Hβ and MgFe indices. The results show that the stellar populations of elliptical galaxies are older than 3.9 Gyr and more metal rich than 0.02. Most of our results are in agreement with the model predictions: (1) elliptical galaxies in denser environment are redder and have older populations than field galaxies; (2)elliptical galaxies with more massive stellar components are redder and have older and more metal rich populations than less massive ones; (3) the most massive galaxies have the oldest and most metal rich stars. However, some of our results differ from the model predictions on the metallicity distributions of low- and high-density elliptical galaxies and the dependence on the distance to the cluster center. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/52328]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Zhongmu Li,Fenghui Zhang,Zhanwen Han. A Study of Binary Stellar Population Synthesis of Elliptical Galaxies[J]. Chinese Journal of Astronomy and Astrophysics,2006,6(6):669. |
| APA | Zhongmu Li,Fenghui Zhang,&Zhanwen Han.(2006).A Study of Binary Stellar Population Synthesis of Elliptical Galaxies.Chinese Journal of Astronomy and Astrophysics,6(6),669. |
| MLA | Zhongmu Li,et al."A Study of Binary Stellar Population Synthesis of Elliptical Galaxies".Chinese Journal of Astronomy and Astrophysics 6.6(2006):669. |
入库方式： OAI收割
来源：国家天文台
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