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arXiv · 1301.3301

Evolution of hierarchical clustering in the CFHTLS-Wide since z~1

M. Wolk·H. J. McCracken·S. Colombi·J. N. Fry·M. Kilbinger·P. Hudelot·Y. Mellier·O. Ilbert
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Abstract

We present measurements of higher order clustering of galaxies from the latest release of the Canada-France-Hawaii-Telescope Legacy Survey (CFHTLS) Wide. We construct a volume-limited sample of galaxies that contains more than one million galaxies in the redshift range 0.2 and the hierarchical moments S_n = / ^(n-1) (3<n<5) as a function of redshift and angular scale.The robustness of our measurements if thoroughly tested, and the field-to-field scatter is in very good agreement with analytical predictions. At small scales, corresponding to the highly non-linear regime, we find a suggestion that the hierarchical moments increase with redshift. At large scales, corresponding to the weakly non-linear regime, measurements are fully consistent with perturbation theory predictions for standard LambdaCDM cosmology with a simple linear bias.

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M. Wolk, H. J. McCracken, S. Colombi, J. N. Fry, M. Kilbinger, P. Hudelot, Y. Mellier, O. Ilbert. 2013-01-15. Evolution of hierarchical clustering in the CFHTLS-Wide since z~1. https://doi.org/10.1093/mnras/stt1111

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