Higher order correlations of IRAS galaxies

Details Higher order correlations of IRAS galaxies Higher order correlations of IRAS galaxies

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394...87m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 394, no. 1, July 20, 1992, p. 87-90. Research supported by NSF-Hungary Exch

Statistics

Computation

51

Computational Astrophysics, Galactic Clusters, Infrared Astronomy Satellite, Astronomical Spectroscopy, Autocorrelation, Correlation Coefficients, Galactic Structure

Scientific paper

The higher order irreducible angular correlation functions are derived up to the eight-point function, for a sample of 4654 IRAS galaxies, flux-limited at 1.2 Jy in the 60 microns band. The correlations are generally found to be somewhat weaker than those for the optically selected galaxies, consistent with the visual impression of looser clusters in the IRAS sample. It is found that the N-point correlation functions can be expressed as the symmetric sum of products of N - 1 two-point functions, although the correlations above the four-point function are consistent with zero. The coefficients are consistent with the hierarchical clustering scenario as modeled by Hamilton and by Schaeffer.

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