Clusters and Superclusters in the Sloan Survey
Abstract
We find clusters and superclusters of galaxies using the Data Release 1 of the Sloan Digital Sky Survey. Density fields with smoothing lengthst of 10 and 0.8 Mpc/h are calculated. We found that galaxies and clusters in a high-density environment have luminosities that are five to ten times higher than in a low-density environment. Numerical simulations show that in underdense regions most particles form a rarefied population of pregalactic matter whereas in overdense regions most particles form a clustered population in rich clusters. Simulations show also that very massive superclusters are great attractors and have small bulk motions.
Cite
@article{arxiv.astro-ph/0408463,
title = {Clusters and Superclusters in the Sloan Survey},
author = {J. Einasto and E. Tago and M. Einasto and E. Saar},
journal= {arXiv preprint arXiv:astro-ph/0408463},
year = {2007}
}
Comments
12 pages of LaTex text with 12 ps figures, submitted for Proceedings of the workshop "Nearby Large-Scale Structures and the Zone of Avoidance", Cape Town, 28 March - 02 April 2004. pdf file with high-quality figures available at http://www.aai.ee/~einasto