Measures of large-scale structure in the CfA redshift survey slices
- 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), Vol. 369; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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