THE VERTICAL STRUCTURE AND KINEMATICS OF THE GALAXY

被引：0
|
作者：
SOUBIRAN, C
机构：
来源：
ASTRONOMY FROM WIDE-FIELD IMAGING | 1994年 / 161期
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A sample including 2370 stars with (U, V) velocities has been analyzed up to z = 2.5 kpc. It is shown that the observed vertical gradient in the velocity distribution can be explained by the sum of 3 discrete populations with constant kinematics. The observations are well fitted by exponential density laws for the thin disk and the thick disk with scale lengths of 280 pc and 700 pc respectively, and with local densities of 6% and 0.15% for the thick disk and halo respectively.
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页码：435 / 439
页数：5
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