Measures of large-scale structure in the CfA redshift survey slices

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169759· OSTI ID:5756607

De Lapparent, V; Geller, M J; Huchra, J P ^[1]

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1. CNRS, Institut d'Astrophysique, Paris (France) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

Variations of the counts-in-cells with cell size are used here to define two statistical measures of large-scale clustering in three 6 deg slices of the CfA redshift survey. A percolation criterion is used to estimate the filling factor which measures the fraction of the total volume in the survey occupied by the large-scale structures. For the full 18 deg slice of the CfA redshift survey, f is about 0.25 + or - 0.05. After removing groups with more than five members from two of the slices, variations of the counts in occupied cells with cell size have a power-law behavior with a slope beta about 2.2 on scales from 1-10/h Mpc. Application of both this statistic and the percolation analysis to simulations suggests that a network of two-dimensional structures is a better description of the geometry of the clustering in the CfA slices than a network of one-dimensional structures. Counts-in-cells are also used to estimate at 0.3 galaxy h-squared/Mpc the average galaxy surface density in sheets like the Great Wall. 46 refs.

• OSTI ID: 5756607
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 369; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
DENSITY
DISTRIBUTION
GALAXY CLUSTERS
MATHEMATICAL MODELS
MATHEMATICS
MORPHOLOGY
PHYSICAL PROPERTIES
RED SHIFT
SIMULATION
SPATIAL DISTRIBUTION
STATISTICS
VARIATIONS