摘要
一、引言对盘星系的物质密度分布的研究,已有了不少工作,例如Toomre,彭秋和等人的工作,但他们都是在—非常简单的模式下,如无限薄盘或有限厚盘的情况下推出来的密度分布公式,因此这公式仅由旋转参量来决定,这是由于假设模式过于简单之故。
In this paper, it is assumed that the matter's distribution within spiral galaxies is mainly composed of two parts: the symmetric polytrope around the centre of galaxies and the plane-layers parallel to the symmetric plane of galaxies. Therefore conversely using the configuration of galaxies the matter's density distribution in galaxies can be determine. Based on the averaged rotational curve the formula of the matter's density distribution within spiral galaxies are obtained. Then the matter's density distribution can be determined by this formual and the measured configuration of spiral galaxies. 14 spiral galaxies are selected as samples and their matter's density distribution are determined.
出处
《北京师范大学学报（自然科学版）》
CAS
1983年第4期69-74,共6页
Journal of Beijing Normal University(Natural Science)
