Discriminating between models of galaxy clustering by statistical measures

Details Discriminating between models of galaxy clustering by statistical measures Discriminating between models of galaxy clustering by statistical measures

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..583s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Feb. 1979, p. 583-602. Research supported by the University of Dur

Astronomy and Astrophysics

Astronomy

21

Astronomical Models, Computerized Simulation, Galactic Clusters, Statistical Analysis, Astronomical Catalogs, Covariance, Many Body Problem, Mathematical Models, Statistical Distributions

Scientific paper

It is shown by simulation that the galaxy 2- and 3-point covariance functions are not sensitive discriminants between two statistical models of galaxy distribution - the hierarchical model and an identical cluster power law model. Indeed, a new statistical analysis applied here to galaxy catalogues, static simulations and N-body simulations strongly suggests that the hierarchical model is less consistent with the observations than the power-law cluster model. This result indicates that the arguments for a hierarchical pattern of galaxy clustering are not as strong as previously thought.

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