Abstract
view Abstract Citations (36) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Density Profiles of Rich Clusters of Galaxies Yahil, Amos Abstract The density profiles of rich clusters of galaxies are investigated through the analysis of published galaxy counts. The main feature of the (three-dimensional) spatial density is the proportionality law p r - . The detectability of deviations from this singular density is scrutinized, and corollaries bearing on the determination of masses of clusters of galaxies and on the cosmological picture of the Universe are discussed. A realistic cutoff to the singular density profile at 5H100 -1 Mpc yields a lower limit > 0.25 to the density of the Universe, and an upper limit z < 3 to the redshift at the epoch of formation of clusters of galaxies, but the limits can be relaxed somewhat if the cutoff radius is smaller. Subject heading: galaxies, clusters of Publication: The Astrophysical Journal Pub Date: August 1974 DOI: 10.1086/153002 Bibcode: 1974ApJ...191..623Y full text sources ADS |
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