English

Angular correlations of galaxy distribution

Astrophysics 2009-10-30 v1

Abstract

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 γa=0.1±0.1\gamma_a= 0.1 \pm 0.1 rather than γa=0.7\gamma_a=0.7 as usually found by the standard correlation function ω(θ)\omega(\theta). We identify the problem in the artificial decay of ω(θ)\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 D2D \approx 2.

Keywords

Cite

@article{arxiv.astro-ph/9706295,
  title  = {Angular correlations of galaxy distribution},
  author = {M. Montuori and F. Sylos-Labini},
  journal= {arXiv preprint arXiv:astro-ph/9706295},
  year   = {2009}
}

Comments

16 pages, latex, 3 postscript figures. Accepted for publication in Astrophysical Journal Letters. This paper is also available at http://www.phys.uniroma1.it/DOCS/PIL/pil.html