Application of the Voronoi Tessellation Technique for Galaxy Cluster Search in the Münster Red Sky Survey

Details Application of the Voronoi Tessellation Technique for Galaxy Cluster Search in the Münster Red Sky Survey Application of the Voronoi Tessellation Technique for Galaxy Cluster Search in the Münster Red Sky Survey

2004-04-08

arxiv.org/abs/astro-ph/0404186v1

Astronomy and Astrophysics

Astrophysics

3 pages, 1 figure, Proceedings IAU Colloquium No. 195, 2004

Scientific paper

10.1017/S1743921304000535

We present the preliminary result of our project, consisting in studying the properties of a large sample of galaxy clusters. The M\"{u}nster Red Sky Survey, which is a large galaxy catalogue covering an area of about 5000 square degrees on the southern hemisphere serves as our observational basis. It is complete up to $r_F=18^m.3$. Creation of a cluster catalogue is the first step of our investigation. We propose to use the 2D Voronoi tessellation technique for identifying galaxy clusters in this 2D catalogue. Points with high values of the inverse Voronoi tessel area will be regarded as galaxy cluster centroids. We show that this approach works correctly.

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