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Large Scale Structures in the Las Campanas Redshift Survey and in Simulations

V. Müller·A. G. Doroshkevich·J. Retzlaff·V. Turchaninov
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Abstract

The large supercluster structures obvious in recent galaxy redshift surveys are quantified using an one-dimensional cluster analysis (core sampling) and a three-dimensional cluster analysis based on the minimal spanning tree. The comparison with the LCRS reveals promising stable results. At a mean overdensity of about ten, the supercluster systems form huge wall-like structures comprising about 40% of all galaxies. The overdense clusters have a low mean transverse velocity dispersion of about 400 km/s, i.e. they look quite narrow in redshift space. We performed N-body simulations with large box sizes for six cosmological scenarios. The quantitative analysis shows that the observed structures can be understood best in low density models with $Ω_m \le 0.5$ with or without a cosmological constant.

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V. Müller, A. G. Doroshkevich, J. Retzlaff, V. Turchaninov. 1998-11-23. Large Scale Structures in the Las Campanas Redshift Survey and in Simulations. https://arxiv.org/abs/astro-ph/9811365

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