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Possible streams of the globular clusters in the Galaxy
Gao, Shuang; Jiang, Bi-Wei; Zhao, Yong-Heng
2007
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号7期号:1页码:111-119
摘要We aim to retrieve ghost streams under the assumption that all the globular clusters in our Galaxy were formed in very early merge events. Our results are based on two speculations: that the specific energy and angular momentum of the globular clusters after merge are not changed in the course of evolution and that the globular clusters with a common origin would stay in the same orbit plane as the parent galaxy. After taking into account the apogalacticum distance of the orbits, we suggest with some confidence five possible streams. The number of streams is consistent with the previous results. Three of the four well established members of the Sagittarius stream were found to be in one of our streams. Several other globular clusters in our result were also thought to come from accretion by previous researchers. The orbital parameters of the streams are derived, which provide a way to test whether these streams are true with the help of more accurate measurement of proper motions of the globular clusters.
关键词Globular Clusters : General Galaxy : Formation Galaxy : Halo
收录类别SCI
语种英语
WOS记录号WOS:000244675200008
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8311
专题光学天文研究部
作者单位1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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GB/T 7714
Gao, Shuang,Jiang, Bi-Wei,Zhao, Yong-Heng. Possible streams of the globular clusters in the Galaxy[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(1):111-119.
APA Gao, Shuang,Jiang, Bi-Wei,&Zhao, Yong-Heng.(2007).Possible streams of the globular clusters in the Galaxy.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(1),111-119.
MLA Gao, Shuang,et al."Possible streams of the globular clusters in the Galaxy".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.1(2007):111-119.
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