Statistical Analysis of Catalogs of Extragalactic Objects. 11. the Abell Catalog of Rich Clusters

Abstract

view Abstract Citations (233) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Statistical Analysis of Catalogs of Extragalactic Objects. II. the Abell Catalog of Rich Clusters Hauser, M. G. ; Peebles, P. J. E. Abstract We present the results of a power-spectrum analysis of the distribution of the clusters in the Abell catalog. We find clear and direct evidence of superclusters with small angular scale, in agreement with the recent study of Bogart and Wagoner, and we find that the degree and angular scale of the apparent superclustering varies with distance in the manner expected if the clustering is intrinsic to the spatial distribution rather than a consequence of patchy local obscuration. The observations can be fitted to a spatial covariance function such that the probability of finding a cluster within 20h -1 Mpc of a randomly chosen cluster is about 10 times the probability for a strictly random distribution (h = Hubble's constant in units of 100 km s - 1 Mpc 1). The observed small-scale structure corresponds to an average of 2 to 3 clusters per supercluster. Although the distribution of clusters at large angular scale clearly is not uniform, we find no basis on the present evidence for deciding whether this is due to local obscuration or to large-scale ( 600h -1 Mpc) density irregularities with density contrast on the order of 30 percent (rms). Subject headings: cosmology - galaxies, clusters of Publication: The Astrophysical Journal Pub Date: November 1973 DOI: 10.1086/152453 Bibcode: 1973ApJ...185..757H full text sources ADS | Related Materials (11) Part 1: 1973ApJ...185..413P Part 3: 1974ApJS...28...19P Part 4: 1974ApJS...28...37P Part 5: 1975ApJ...196....1P Part 6: 1975ApJ...196..647P Part 7: 1977ApJ...217..385G Part 8: 1977ApJ...215..703S Part 9: 1978ApJ...221...19F Part 10: 1978ApJ...225....7S Part 11: 1979ApJ...227...30S Part 12: 1980ApJ...238..785F