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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
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
Volume26Issue:3Pages:267-275
AbstractOn 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.
KeywordGalaxy Spiral Structure Halo
Indexed BySCI
Language英语
WOS IDWOS:000177827900002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8542
Collection射电天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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