SIMBAD references

2011ApJ...729..123Y - Astrophys. J., 729, 123 (2011/March-2)

The galaxy counts-in-cells distribution from the Sloan Digital Sky Survey.

YANG A. and SASLAW W.C.

Abstract (from CDS):

We determine the galaxy counts-in-cells distribution from the Sloan Digital Sky Survey (SDSS) for three-dimensional spherical cells in redshift space as well as for two-dimensional projected cells. We find that cosmic variance in the SDSS causes the counts-in-cells distributions in different quadrants to differ from each other by up to 20%. We also find that within this cosmic variance, the overall galaxy counts-in-cells distribution agrees with both the gravitational quasi-equilibrium distribution and the negative binomial distribution. We also find that brighter galaxies are more strongly clustered than if they were randomly selected from a larger complete sample that includes galaxies of all luminosities. The results suggest that bright galaxies could be in dark matter halos separated by less than ∼10 h–1 Mpc.

Abstract Copyright:

Journal keyword(s): cosmology: theory - galaxies: statistics - gravitation - large-scale structure of universe

Simbad objects: 3

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2019.12.11-18:44:05

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