Mergers and clustering evolution

Details Mergers and clustering evolution Mergers and clustering evolution

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...411l...9c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 411, no. 1, p. L9-L12.

Statistics

Computation

3

Galactic Clusters, Galactic Evolution, Interacting Galaxies, Computational Astrophysics, Dark Matter, Power Spectra

Scientific paper

Models of galaxy merging and its effect on the galaxies' clustering properties are discussed with emphasis on the properties of a possible general model of galaxy merging. It is emphasized that, on scales less than about 2/h Mpc, the clustering of the merged population is sensitive to the details of the merger process, although continuing infall and orbital mixing will maintain density gradients of the galaxy population on small scales. Merging greatly reduces small-scale clustering but can leave statistically upward biased large-scale galaxy clustering substantially in place. The effect of a linear merger filter on the power spectrum is shown to result in a galactic spectrum which, for merged fractions of about 20 percent, have large-scale galaxy tracer power comparable to a linear model.

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