A bootstrap resampling analysis of galaxy clustering

Details A bootstrap resampling analysis of galaxy clustering A bootstrap resampling analysis of galaxy clustering

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210p..19b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Sept. 15, 1984, p. 19P-23P.

Astronomy and Astrophysics

Astronomy

120

Data Sampling, Galactic Clusters, Statistical Analysis, Astronomical Catalogs

Scientific paper

The application of the bootstrap resampling technique (BRT) to determining standard errors is illustrated by means of the galaxy-galaxy correlation function in the Zwicky catalog (1961-68). The BRT involves generating a large number of pseudo-data sets from a single data set and then examining a property of the original set for all the pseudo-data sets. The technique permits a good estimation of the robustness of any calculation involving a property of the original data set. A sample of 1091 14th magnitude galaxies in one sky region is considered in terms of a Poisson sample and pairwise separation. A total of 180 pseudo-data sets was generated, and angular correlations are computed. The results support a significant degree of entropy in the distribution of galaxies.

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