The shape distribution of superclusters in SDSS DR 12

Abstract

Galaxy superclusters, the largest galaxy structures in the cosmic web, are formed due to the gravitational collapse (although they are not usually gravitationally bound). Their geometrical properties can shed light on the structure formation process on cosmological scales, hence on the fundamental properties of gravity itself. In this work we study the distributions of the shape, topology and morphology of the superclusters extracted from SDSS DR 12 main galaxy sample and defined in two different ways - using fixed and adaptive density threshold in the luminosity-density field. To assess the geometry and topology of each individual supercluster, we employ Minkowski functionals and Shapefinders, precisely calculated by the shape diagnostic tool SURFGEN2. Both supercluster samples produce similar shape distributions. Not surprisingly, most superclusters are spherical in shape with trivial topology. However, large superclusters with volumes $V\gtrsim 10^4$ Mpc${}^3$ are statistically found to be filamentary with non-zero genus values. The results, shape distributions and catalogues have been made publicly available.

arXiv comment22 pages, 22 figures, accepted for publication in MNRAS

References in corpus (56)

• Planck 2015 results. XIII. Cosmological parameters
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• How Filaments are Woven into the Cosmic Web
• The large-scale structure of the Universe
• Tracing the cosmic web
• The Laniakea supercluster of galaxies
• A Cosmic Watershed: the WVF Void Detection Technique
• Minkowski Functionals used in the Morphological Analysis of Cosmic Microwave Background Anisotropy Maps
• Flux- and volume-limited groups/clusters for the SDSS galaxies: catalogues and mass estimation
• Beyond genus statistics: a unifying approach to the morphology of cosmic structure
• Shapefinders: A new shape diagnostic for large scale structure
• Merging groups and clusters of galaxies from the SDSS data. The catalogue of groups and potentially merging systems
• SDSS DR7 superclusters. The catalogues
• Primordial Non-Gaussianity and Analytical Formula for Minkowski Functionals of the Cosmic Microwave Background and Large-scale Structure
• Crawling the Cosmic Network: Identifying and Quantifying Filamentary Structure
• Past and present cosmic structure in the SDSS DR7 main sample
• Minkowski Functionals of SDSS galaxies I : Analysis of Excursion Sets
• Morphology of the supercluster-void network in LCDM cosmology
• Topology and Sizes of HII Regions during Cosmic Reionization
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• The Sloan Great Wall. Morphology and galaxy content
• Measuring the Geometry and Topology of Large Scale Structure using SURFGEN: Methodology and Preliminary Results
• SDSS superclusters: morphology and galaxy content
• Minkowski Functionals and Cluster Analysis for CMB Maps
• SDSS DR7 superclusters. Morphology
• Direct Minkowski Functional analysis of large redshift surveys: a new high--speed code tested on the luminous red galaxy Sloan Digital Sky Survey-DR7 catalogue
• Studying topological structure in the epoch of reionization with 3D-Minkowski functionals of 21cm line fluctuations
• Discovery of a massive supercluster system at $z\sim 0.47$
• Universality of the Network and Bubble Topology in Cosmological Gravitational Simulations
• Morphology of Clusters and Superclusters in N-body simulations of Cosmological Gravitational Clustering
• Sloan Great Wall as a complex of superclusters with collapsing cores
• Multiscale cosmic web detachments, connectivity, and preprocessing in the supercluster SClA2142 cocoon
• Detection of Network Structure in the Las Campanas Redshift Survey
• Unusual A2142 supercluster with a collapsing core: distribution of light and mass
• Saraswati: An Extremely Massive ~ 200 Megaparsec Scale Supercluster
• Stages of Reionization as revealed by the Minkowski Functionals
• Non-Gaussianity in Large Scale Structure and Minkowski Functionals
• The Shape and Size distribution of HII Regions near the percolation transition
• Studying the morphology of HI isodensity surfaces during reionization using Shapefinders and percolation analysis
• Minkowski Functionals of SDSS-III BOSS : Hints of Possible Anisotropy in the Density Field?
• Evolution of superclusters in the cosmic web
• SDSS DR7 superclusters. Principal component analysis
• The Corona Borealis supercluster: connectivity, collapse, and evolution
• Weakly non-Gaussian formula for the Minkowski functionals in general dimensions
• Extended percolation analysis of the cosmic web
• Morphology of Mock SDSS Catalogues
• Star Formation and Supercluster Environment of 107 Nearby Galaxy Clusters
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: higher-order correlations revealed by germ-grain Minkowski Functionals
• Evolution of superclusters and supercluster cocoons in various cosmologies
• Distinguishing reionization models using the largest cluster statistics of the 21-cm maps
• Emergence of Filamentary Structure in Cosmological Gravitational Clustering
• The richest superclusters. I. Morphology

Cited by in corpus (5)

• The large-scale structure around the Fornax-Eridanus Complex
• Interpreting the HI 21-cm cosmology maps through Largest Cluster Statistics -- I: Impact of the synthetic SKA1-Low observations
• Galaxy Superclusters and Their Complexes in the Cosmic Web
• Isolated and group environment dependence of stellar mass and different star formation rates
• A VLT/VIMOS view of two $Planck$ multiple-cluster systems: structure and galaxy properties