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A study on the Sagittarius-Carina arm and the halo mass of our Galaxy
Zhang, M; Han, JL; Peng, QH
2002-07-01
发表期刊CHINESE ASTRONOMY AND ASTROPHYSICS
卷号26期号:3页码:267-275
摘要On the basis of the new Galactic rotation curve and constants R-0 and V-0, and using HII regions, giant molecular clouds and other tracer objects, we have revised the pattern of the Sagittarius-Carina arm of our Galaxy. We have derived its pitch angle to be about 12degrees, and explored the dependence of the pitch angle on the Galactic constants. The result indicates that with decreasing Galactic constants, the pitch angle increases, and so does the number of spiral arms, according to the symmetric logaxithmic arms model. In addition, the halo mass of our Galaxy will decrease with the flattening and downward turn of the rotation curve.
关键词Galaxy Spiral Structure Halo
收录类别SCI
语种英语
WOS记录号WOS:000177827900002
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8542
专题射电天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
3.Peking Univ, Joint Beijing Astrophys Ctr, Chinese Acad Sci, Beijing 100871, Peoples R China
4.Chinese Acad Sci, Open Lab Cosm Rays & Space Astron, Beijing 100039, Peoples R China
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Zhang, M,Han, JL,Peng, QH. A study on the Sagittarius-Carina arm and the halo mass of our Galaxy[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(3):267-275.
APA Zhang, M,Han, JL,&Peng, QH.(2002).A study on the Sagittarius-Carina arm and the halo mass of our Galaxy.CHINESE ASTRONOMY AND ASTROPHYSICS,26(3),267-275.
MLA Zhang, M,et al."A study on the Sagittarius-Carina arm and the halo mass of our Galaxy".CHINESE ASTRONOMY AND ASTROPHYSICS 26.3(2002):267-275.
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