星系团二维分布的分形特征

The Fractal Properties of the Two-dimensional Distribution of Galaxy Clusters

本文采用分形分析法分别研究了全天区富星系团表中北银纬和南银纬不同深度和不同富性的子样本的二维分布规律，结果发现星系团的二维分布是一个多级分形结构，在Ｄ≤４和Ｄ＝５＋６类子样本中，不同分形级之间的转变尺度所对应的投影尺度均为～４２ｈ^（－１）Ｍｐｃ。在整个尺度范围内，北银纬、南银纬样本星系团的分布规律很相似。

We investigate the fractal properties of the two-dimensional distribution of different richness and distance class subsamples for an all-sky catalog of rich clusters of galaxies.The results show that the two-dimensional distribution of the clusters can be described by a multi-level fractal structure.In the D≤4 and D=5+6 subsamples,the apparent turning scale between successive fractal levels is ￣42h-1Mpc.The fractal properties are similar in the northern and southern galactic latitudes on small and large scales.