Clusters and Superclusters in the Las Campanas Redshift Survey

Details Clusters and Superclusters in the Las Campanas Redshift Survey Clusters and Superclusters in the Las Campanas Redshift Survey

2003-04-30

arxiv.org/abs/astro-ph/0304546v1

Astron.Astrophys. 410 (2003) 425

Astronomy and Astrophysics

Astrophysics

19 pages LaTeX text, 15 PostScript Figures, submitted to Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20031105

Two-dimensional high-resolution density field of galaxies of the Las Campanas Redshift Survey (LCRS) with a smoothing length 0.8 Mpc/h is used to extract clusters and groups of galaxies, and a low-resolution field with a smoothing length 10 Mpc/h to find superclusters of galaxies. Properties of these density field (DF) clusters and superclusters are studied and compared with the properties of Abell clusters and superclusters, and LCRS loose groups. We calculate the DF-cluster luminosity function, and show that most luminous clusters in high-density environments are about ten times brighter than most luminous clusters in low-density environments. We present a catalogue of DF-superclusters and show that superclusters that contain Abell clusters are richer and more luminous than superclusters without Abell clusters. A pdf file of the paper with high-resolution figures is available in Tartu Observatory web-site (http://www.aai.ee/~maret/cosmoweb.html)

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