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Possible streams of the globular clusters in the Galaxy
Gao, Shuang; Jiang, Bi-Wei; Zhao, Yong-Heng
2007
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
Volume7Issue:1Pages:111-119
AbstractWe 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.
KeywordGlobular Clusters : General Galaxy : Formation Galaxy : Halo
Indexed BySCI
Language英语
WOS IDWOS:000244675200008
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8311
Collection光学天文研究部
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
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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