Statistics – Computation
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.216...85p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 216, Sept. 1, 1985, p. 85-92.
Statistics
Computation
2
Galaxies, Mass Distribution, Statistical Distributions, Computational Astrophysics, Galactic Clusters, Probability Distribution Functions, Voids
Scientific paper
A new method of investigation of voids in the distribution of galaxies is proposed. The spheres of a given volume are randomly placed in the distribution and counted when they are empty (0-point statistics) or contain at most two galaxies (2-point statistics). These statistics are measured for two samples obtained from the data of the CfA catalogue and for three samples obtained from the Soneira-Peebles (SP) prescription for the hierarchical distribution. It is found that the results for the CfA catalogue do not depend on assuming the Virgo flow correction. The results for the SP samples scale with the changes of amplitude of the two-point spatial correlation function and of the mean density of galaxies. Despite the substantial sampling errors the results may indicate that the spatial boundaries of the real voids are less strictly defined than those of the SP voids.
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