Detection of large-scale alignment of Lick counts around Abell clusters

Details Detection of large-scale alignment of Lick counts around Abell clusters Detection of large-scale alignment of Lick counts around Abell clusters

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..471a&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, March 1986, p. 471-477. NSF-NASA-supported research.

Statistics

48

Astrometry, Galactic Clusters, Alignment, Data Correlation, Density Distribution, Red Shift, Standard Deviation

Scientific paper

The possible tendency of galaxies to be distributed in an aligned fashion, on sheets or filaments, on scales greater than the Abell radius, has been tested by a variety of statistics. The subject remains controversial because the statistical tests have either not been sensitive to the alignment or capable of unambiguously signalling alignment in a general, clumpy distribution of galaxies. The present approach combines ideas of Bingelli (1982) and Fry and Peebles (1980) in an examination of the cross correlation of Lick counts relative to the preferred direction defined by the cluster. This can substantially reduce the noise, and it is suggested on this basis that alignment has been found on large scales for Lick galaxy counts and Abell cluster positions and their angles.

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