The robustness of the galaxy distribution function to effects of merging and evolution

Details The robustness of the galaxy distribution function to effects of merging and evolution The robustness of the galaxy distribution function to effects of merging and evolution

2010-10-31

arxiv.org/abs/1011.0176v1

Proceedings of the Conference in Honour of Murray Gell-Mann's 80th Birthday, eds. H. Fritzsch and K. K. Phua, pp 597-604, 2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

To appear in the Proceedings of the Conference in Honour of Murray Gell-Mann's 80th Birthday

Scientific paper

We examine the evolution of the spatial counts-in-cells distribution of galaxies and show that the form of the galaxy distribution function does not change significantly as galaxies merge and evolve. In particular, bound merging pairs follow a similar distribution to that of individual galaxies. From the adiabatic expansion of the universe we show how clustering, expansion and galaxy mergers affect the clustering parameter b. We also predict the evolution of b with respect to redshift.

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