DISTRIBUTION-FUNCTIONS FOR SPHERICAL GALAXIES

被引：54
|
作者：
MERRITT, D
机构：
[1] Department of Astronomy, University of California, Berkeley,CA,94720, United States
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1985年 / 214卷 / 03期
基金：
美国国家科学基金会;
关键词：
Anisotropy; -; Galaxies;
D O I：
10.1093/mnras/214.1.25P
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A family of anisotropic distribution functions is derived that correspond exactly to the spherical density law ?(r) ? r-2(1+r)-2, suggested by Jaffe for describing giant elliptical galaxies. The family is characterized by a single free parameter that specifies the degree of velocity anisotropy, from isotropic to completely radial. Both the distribution functions, and the equations describing the radial variation of the velocity dispersion, can be expressed in terms of simple functions. © 1985 Royal Astronomical Society.
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页码：P25 / P28
页数：4
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