Angular correlations of galaxy distribution

Details Angular correlations of galaxy distribution Angular correlations of galaxy distribution

1997-06-30

arxiv.org/abs/astro-ph/9706295v1

Astronomy and Astrophysics

Astrophysics

16 pages, latex, 3 postscript figures. Accepted for publication in Astrophysical Journal Letters. This paper is also available

Scientific paper

10.1086/310871

We study the angular correlations of various galaxy catalogs (CfA1, SSRS1, Perseus-Pisces, APM Bright Galaxies and Zwicky). We find that the angular correlation exponent is $\gamma_a= 0.1 \pm 0.1$ rather than $\gamma_a=0.7$ as usually found by the standard correlation function $\omega(\theta)$. We identify the problem in the artificial decay of $\omega(\theta)$. Moreover we find that no characteristic angular scale is present in any of the analyzed catalogs. Finally we show that all the available data are consistent with each other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with $D \approx 2$.

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