Some Characteristics of Associated Galaxies. I. a. Density Restriction in the Metagalaxy.

Abstract

view Abstract Citations (20) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Some Characteristics of Associated Galaxies. I. a. Density Restriction in the Metagalaxy. Carpenter, E. F. Abstract The densities of distribution of galaxies in 42 metagalactic groups and clusters have been computed. The fundamental data were drawn chiefly from descriptions published at the Harvard and Mount Wilson observatories. Distances of the latter set have been correlated with the red-shift, while distances of the former are entirely photometric, but results from both sources are consistent. Analyses of partly observed memberships of clusters are believed to furnish estimates of the total membership with sufficient ac- curacy for this investigation. The study shows that the smaller a cluster is, in dimensions and membership, the greater its density may be. The distribution of clusters in the density-volume diagram is bounded by the fairly well-defined envelope pmax = ~oo/V V, and suggests that the conventionally recognized clusters of galaxies are not separate metagalactic entities but are merely the extremes of a nonuniform space distribution conditioned by the above-mentioned density restriction. The foregoing value of the constant of pro- portionality results from the adoption of - 14.2 as the average absolute magnitude of a galaxy Publication: The Astrophysical Journal Pub Date: October 1938 DOI: 10.1086/143987 Bibcode: 1938ApJ....88..344C full text sources ADS |