A New Method to Determine the Thickness of Spiral Galaxies:Apply to M31

作     者：LI Meng LUO Xin-Lian PENG Qiu-He ZOU Zhi-Gang CHOU Chih-Kang 李猛;罗新炼;彭秋和;邹志刚;CHOU Chih-Kang

作者机构：Department of AstronomyNanjing UniversityNanjing 210093 Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical CenterPeking UniversityBeijing 100871 Graduate Institute of Astronomy^National Central UniversityChung-Li32054TaiwanChina 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2000年第17卷第6期

页      面：466-468页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported in part by the National Natural Science Foundation of China under Grant No.19873005 the Director Foundation of National Education Ministry(9528424) the National Climbing Project on Fundamental Researches 

主　　题：galaxies M31 stellar 

摘      要：A new method is presented to determine the thickness of spiral *** on the rigorous solution of the Poisson equation for logarithmic density disturbance in three-dimensional spiral galaxies,we have derived an accurate dispersion relation for the stellar and gaseous disk with a finite *** this relation,a new method is put forward here for determining the thickness of *** apply this way to M31 and get the thickness of about 0.7kpc,which is in good agreement with the previous results.