Metal abundance and kinematical properties of the M81 globular cluster system
文献类型：期刊论文
| 作者 | Wu, Jiang-Hua3; Yuan, Qi-Rong4; Zhou, Xu2 ; Du, Cui-Hua5; Wang, Song1,2; Zhang, Tian-Meng2; Wu, Zhen-Yu2; Fan, Zhou2; Ma, Jun2,6; Zou, Hu2
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 13期号:4页码:399-410 |
| 关键词 | Galaxies: Individual (M81) Galaxies: Star Clusters Globular Clusters: General |
| DOI | 10.1088/1674-4527/13/4/003 |
| 英文摘要 | We present metal abundance properties of 144 globular clusters associated with M81. These globulars represent the largest globular cluster sample in M81 till now. Our main results are: the distribution of metallicities is bimodal, with metallicity peaks at [Fe/H] approximate to -1.51 and -0.58, and the metal-poor globular clusters tend to be less spatially concentrated than the metal-rich ones; the metal-rich globular clusters in M81 do not demonstrate a centrally concentrated spatial distribution like the metal-rich ones in M31 do; like our Galaxy and M31, the globular clusters in M81 have a small radial metallicity gradient. These results are consistent with those obtained from a small sample of M81 globular clusters. In addition, this paper shows that there is evidence that a strong rotation of the M81 globular cluster system around the minor axis exists, and that rotation is present in the metal-rich globular cluster subsample, but themetal-poor globular cluster subsample shows no evidence of rotation. The most significant difference between the rotation of the metal-rich and metal-poor globular clusters occurs at intermediate projected galactocentric radii. Our results confirm the conclusion of Schroder et al. that M81's metal-rich globular clusters at intermediate projected radii are associated with a thick disk of M81. |
| 语种 | 英语 |
| WOS记录号 | WOS:000316788000003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8901]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 4.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 5.Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Jiang-Hua,Yuan, Qi-Rong,Zhou, Xu,et al. Metal abundance and kinematical properties of the M81 globular cluster system[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(4):399-410. |
| APA | Wu, Jiang-Hua.,Yuan, Qi-Rong.,Zhou, Xu.,Du, Cui-Hua.,Wang, Song.,...&Wu Zhenyu.(2013).Metal abundance and kinematical properties of the M81 globular cluster system.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(4),399-410. |
| MLA | Wu, Jiang-Hua,et al."Metal abundance and kinematical properties of the M81 globular cluster system".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.4(2013):399-410. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。