Clusters and Superclusters in the Sloan and Las Campanas Surveys

Details Clusters and Superclusters in the Sloan and Las Campanas Surveys Clusters and Superclusters in the Sloan and Las Campanas Surveys

2004-01-16

arxiv.org/abs/astro-ph/0401342v1

Astronomy and Astrophysics

Astrophysics

15 pages LaTeX text, 11 Postscript figures, submitted for Proceedings of the Tenth Marcel Grossmann Meeting, Rio de Janeiro, J

Scientific paper

We generate the 2-dimensional high-resolution density field of galaxies of the Early Data Release of the Sloan Digital Sky Survey and the Las Campanas Redshift Survey with a smoothing length 0.8 Mpc/h to extract clusters and groups of galaxies, and a low-resolution field with a smoothing length 10 Mpc/h to extract superclusters of galaxies. We investigate properties of density field clusters and superclusters and compare the properties of these clusters and superclusters with those of Abell clusters, and superclusters found on the basis of Abell clusters. We found that clusters in a high-density environment have a luminosity a factor of 5 - 10 higher than in a low-density environment. Clusters and superclusters in the Northern slice of SDSS are much richer than those in the Southern slice.

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