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A Study of the Large-Scale Distribution of Galaxies in the South Galactic Pole Region: II. Further Evidence for a Preferential Clustering Scale?

S. Ettori·L. Guzzo·M. Tarenghi
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Abstract

We analyse a set of new pencil-beam galaxy redshift data in three small regions around the South Galactic Pole (SGP) area. We investigate whether we can find any evidence of the quasi-periodic peaks discovered by Broadhurst et al. (1990) in the distribution of galaxies along the NGP-SGP directions. We use both a power spectrum analysis and a cross-correlation with a sliding comb-like window (the comb-template technique). Despite the data are less deep (~600 h^{-1} Mpc) and certainly not optimal for such an investigation, there is evidence of the same preferential ~130 h^{-1} Mpc scale in two fields displaced respectively 15 and 30 degrees West of the Broadhurst et al. original probe. Taken alone, however, this peak would not be statistically distinguishable from a noise fluctuation. Nevertheless, the statistical significance of the detection raises to 99% when one considers the CONDITIONAL probability of finding a peak around THE SAME scale measured by Broadhurst et al.

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S. Ettori, L. Guzzo, M. Tarenghi. 1996-10-02. A Study of the Large-Scale Distribution of Galaxies in the South Galactic Pole Region: II. Further Evidence for a Preferential Clustering Scale?. https://doi.org/10.1093/mnras%2F285.1.218

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