Finding Clusters of Galaxies in the Sloan Digital Sky Survey using Voronoi Tessellation.

[摘要] The Sloan Digital Sky Survey has obtained 450 square degrees of photometric scan data, in five bands (u, g, r, I, z,), which we use to identify clusters of galaxies. We illustrate how we do star-galaxy separation, and present a simple and elegant method of detecting over-densities in the galaxy distribution, using the Voronoi Tessellation.

[发布机构] Technical Information Center Oak Ridge Tennessee

[学科分类] 工程和技术（综合）

[关键词] Galaxies;Star clusters;Spatial distribution;Voronoi Tessellation