银河系厚盘的本地空间密度  

THE LOCAL SPACE DENSITY OF THE GALACTIC THICK DISK

作　　者：容建湘[1] 

机构地区：[1]南京大学天文系

出　　处：《天文学报》1996年第3期272-277,共6页Acta Astronomica Sinica

基　　金：国家自然科学基金

摘　　要：本文利用北银极天区的现代恒星计数资料，采用标准的银河系模型，通过恒星统计积分方程对参数值组合模型的亮度函数进行计数分析，证明了银河系厚盘恒星成份存在的必要性，并进一步得出太阳附近厚盘成份的空间密度的最佳期望值为薄盘密度的０．０４１．Based on a large number of paraxneterized four-component models of our Galaxy, and the Least-squares calculations which were performed to investigate bast-fitting models,We have analyzed star count data near the North Galactic Pole.The conclusions the necessity of the existance of a Thick Disk-component in this direction and that its local normalization is about 0.04,are published in this paper.

关 键 词：银河系 厚盘成分 本地空间密度 恒星计数分析 

分 类 号：P156[天文地球—天文学]