SDSS DR7 superclusters. Morphology

Abstract

We study the morphology of a set of superclusters drawn from the SDSS DR7. We calculate the luminosity density field to determine superclusters from a flux- limited sample of galaxies from SDSS DR7, and select superclusters with 300 and more galaxies for our study. The morphology of superclusters is described with the fourth Minkowski functional V3, the morphological signature (the curve in the shapefinder's K1-K2 plane) and the shape parameter (the ratio of the shapefinders K1/K2). We investigate the supercluster sample using multidimensional normal mixture modelling, and use Abell clusters to identify our superclusters with known superclusters and to study the large-scale distribution of superclusters. The superclusters in our sample form three chains of superclusters; one of them is the Sloan Great Wall. Most superclusters have filament-like overall shapes. Superclusters can be divided into two sets; more elongated superclusters are more luminous, richer, have larger diameters, and a more complex fine structure than less elongated superclusters. The fine structure of superclusters can be divided into four main morphological types: spiders, multispiders, filaments, and multibranching filaments. We present the 2D and 3D distribution of galaxies and rich groups, the fourth Minkowski functional, and the morphological signature for all superclusters. Widely different morphologies of superclusters show that their evolution has been dissimilar. A study of a larger sample of superclusters from observations and simulations is needed to understand the morphological variety of superclusters and the possible connection between the morphology of superclusters and their large-scale environment.

Comments: 20 pages, 18 figures, accepted for publication in Astronomy and Astrophysics

References in corpus (23)

• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• Multiscale Phenomenology of the Cosmic Web
• The ALHAMBRA Project: A large area multi medium-band optical and NIR photometric survey
• Superclusters of galaxies from the 2dF redshift survey. I. The catalogue
• Galaxy morphology, luminosity and, environment in the SDSS DR7
• The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey
• The Effect of Large-Scale Structure on the SDSS Galaxy Three-Point Correlation Function
• Shapley Optical Survey II: The effect of environment on the colour-magnitude relation and galaxy colours
• The Complex Structure of the Cl 1604 Supercluster at z~0.9
• Anatomy of luminosity functions: the 2dFGRS example
• Superclusters of galaxies from the 2dF redshift survey. II. Comparison with simulations
• Topology of structure in the Sloan Digital Sky Survey: model testing
• Luminous superclusters: remnants from inflation
• An XMM-Newton observation of the dynamically active binary cluster A1750
• Superclusters of galaxies in the 2dF redshift survey. III. The properties of galaxies in superclusters
• The discovery of a massive supercluster at z=0.9 in the UKIDSS DXS
• Morphological Properties of Superclusters of Galaxies
• Large-scale modulation of star formation in void walls
• The Sloan Great Wall. Rich clusters
• Multi-scale morphology of the galaxy distribution
• The Future of the Local Large Scale Structure: the roles of Dark Matter and Dark Energy
• Chandra Observation of Abell 2065: An Unequal Mass Merger?
• The richest superclusters. I. Morphology

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