摘要
在小波分析的基础上，用峰值计数法考察了Ｖｉｒｇｏ团天区的结构与次结构．在Ｖｉｒｇｏ团典型的双峰结构下面，发现还有１８０’和１２０’两个明显的次结构的特征尺度．该结果有力地支持了等级式的成团模式．与之对应的波长下的小波强度分布清楚地显示了Ｖｉｒｇｏ团丰富的次结构及其分布情况，从中还发现了两个新的较小的次结构。
In this paper,we present a peak number count method,based on wavelet transfor- mation,and use it to explore the structure and substructures in the Virgo area.It is found that, besides the two-humped structure, there are also quite a lot of small subclusters with characteristic scales of 180' and 120'. This result strongly supports the hierarchical cluster- ing model of structures. The wavelet coefficient map clearly shows these substructures and their distributions. Additionally,two new small subclusters are discovered.
基金
国家自然科学基金
中科院重点基金
上海天文台青年实验室
