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starcountsandgalacticstructure
Du Cuihua; Zhou Xu; Ma Jun; Chen Jiansheng
2004
Source Publicationchinesephysicsletters
ISSN0256-307X
Volume21Issue:6Pages:1179
AbstractWe use a model of the Galactic stellar distribution to analyse the BATC star count data toward two high Galactic latitude fields. Since star counts at high Galactic latitudes are not strongly related to the radial distribution, they are very suitable for the study of the vertical distribution of the Galaxy. The vertical density distribution of the stars shows the contribution of the thin disc, the thick disc and the stellar halo of the Galaxy. We give quantitative descriptions of these components in terms of exponential discs and a de Vaucouleurs halo. We find that the observed counts support an axial ratio of c/a similar to 0.5, implying a more flattened halo. We consider that it is possible that the halo has two subpopulations, i.e. a flattened inner halo and a spherical outer halo in the Milky Way.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/48307
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Du Cuihua,Zhou Xu,Ma Jun,et al. starcountsandgalacticstructure[J]. chinesephysicsletters,2004,21(6):1179.
APA Du Cuihua,Zhou Xu,Ma Jun,&Chen Jiansheng.(2004).starcountsandgalacticstructure.chinesephysicsletters,21(6),1179.
MLA Du Cuihua,et al."starcountsandgalacticstructure".chinesephysicsletters 21.6(2004):1179.
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