Clusters and Superclusters in the Las Campanas Redshift Survey

Abstract

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)

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

References in corpus (12)

• The Las Campanas Redshift Survey
• The Luminosity Function of Galaxies in the Las Campanas Redshift Survey
• Optical and X-ray clusters as tracers of the supercluster-void network. I Superclusters of Abell and X-ray clusters
• The Supercluster-Void Network I. The Supercluster Catalogue and Large-Scale Distribution
• Loose Groups of Galaxies in the Las Campanas Redshift Survey
• Clusters and Superclusters in the Sloan Digital Sky Survey
• Voids in the LCRS versus CDM Models
• Two-Dimensional Topology of the Sloan Digital Sky Survey
• PSCz Superclusters: Detection, Shapes & Cosmological Implications
• Environmental Enhancement of Loose Groups around Rich Clusters of Galaxies
• Las Campanas Loose Groups in the Supercluster-Void Network
• The mass function of the Las Campanas loose groups of galaxies

Cited by in corpus (24)

• Superclusters of galaxies from the 2dF redshift survey. I. The catalogue
• The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• The Sloan Great Wall. Morphology and galaxy content
• Superclusters of galaxies from the 2dF redshift survey. II. Comparison with simulations
• The Limits of Bound Structures in the Accelerating Universe
• Luminous superclusters: remnants from inflation
• The Shape-Alignment relation in $\Lambda$CDM Cosmic Structures
• The Size of the Longest Filaments in the Universe
• Superclusters of galaxies in the 2dF redshift survey. III. The properties of galaxies in superclusters
• Structure and dynamics of the Shapley Supercluster
• Galaxy properties from Voids to Clusters in the SDSS-DR4
• Exploring galaxy colour in different environments of the cosmic web with SDSS
• Multiscale cosmic web detachments, connectivity, and preprocessing in the supercluster SClA2142 cocoon
• Toward Understanding Environmental Effects in SDSS Clusters
• Evolution of superclusters in the cosmic web
• The Corona Borealis supercluster: connectivity, collapse, and evolution
• The Shape, Multiplicity, and Evolution of Superclusters in LambdaCDM Cosmology
• Environmental Enhancement of DM Haloes
• Extended percolation analysis of the cosmic web
• The Cosmic Large-Scale Structure in X-rays (CLASSIX) cluster survey IV: Superclusters in the local Universe at z <= 0.03
• A redshift database towards the Shapley Supercluster region
• Evolution of superclusters and supercluster cocoons in various cosmologies
• The richest superclusters. I. Morphology