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Title:
The mean density and two-point correlation function for the CfA redshift survey slices
Authors:
de Lapparent, Valerie; Geller, Margaret J.; Huchra, John P.
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AC(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 332, Sept. 1, 1988, p. 44-56. Research supported by the Smithsonian Institution. (ApJ Homepage)
Publication Date:
09/1988
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
CORRELATION, DENSITY DISTRIBUTION, GALACTIC CLUSTERS, RED SHIFT, HUBBLE CONSTANT, SPATIAL DISTRIBUTION
DOI:
10.1086/166627
Bibliographic Code:
1988ApJ...332...44D

Abstract

The effect of large-scale inhomogeneities on the determination of the mean number density and the two-point spatial correlation function were investigated for two complete slices of the extension of the Center for Astrophysics (CfA) redshift survey (de Lapparent et al., 1986). It was found that the mean galaxy number density for the two strips is uncertain by 25 percent, more so than previously estimated. The large uncertainty in the mean density introduces substantial uncertainty in the determination of the two-point correlation function, particularly at large scale; thus, for the 12-deg slice of the CfA redshift survey, the amplitude of the correlation function at intermediate scales is uncertain by a factor of 2. The large uncertainties in the correlation functions might reflect the lack of a fair sample.

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