The Galaxy Distribution Function from the 2MASS Survey

Abstract

We determine the spatial distribution function of galaxies from a wide range of samples in the 2MASS survey. The results agree very well with the form of the distribution predicted by the theory of cosmological gravitational many-body galaxy clustering. On large scales we find a value of the clustering parameter b = 0.867 +/- 0.026, in agreement with b = 0.83 +/- 0.05 found previously for the Pisces-Perseus supercluster. We measure b(theta) as a function of scale, since this is a powerful test of the applicability of computer simulations. The results suggest that when galaxies clustered they were usually surrounded by individual, rather than by communal haloes.

arXiv commentAstrophysical Journal, accepted: 14 pages with 23 embedded reduced resolution Postscript figures & 2 tables

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Cited by in corpus (11)

• Clustering of Galaxies with f(R) gravity
• An estimation of local bulk flow with the maximum-likelihood method
• The galaxy counts-in-cells distribution from the SDSS
• Large scale correlations in galaxy clustering from the Two degree Field Galaxy Redshift Survey
• Nature and completeness of galaxies detected in the Two Micron All Sky Survey
• Finite Tsallis Gravitational Partition Function for a System of Galaxies
• The Spatial Distribution Function of Galaxies at High Redshift
• Logarithmic corrections to Newtonian gravity and Large Scale Structure
• Shapes and Probabilities of Galaxy Clusters
• The large scale structure formation in an expanding universe
• Shapes and Probabilities of Galaxy Clusters II: Comparisons with observations