A complete sample of southern E and S0 galaxies - Clustering properties
Elaine M. Sadler, N. A. Sharp · The Astrophysical Journal · 1984
The angular and spatial clustering of a sample of southern elliptical and S0 galaxies, complete to a limiting apparent magnitude of 13.8 and all having measured radial velocities, are analyzed. The sample has an angular covariance function w = 5.6 theta to the -1.1 power, in agreement with previous work. The spatial density field is derived, and thence the three-dimensional covariance function. This is consistent with the angular structure, and gives the more accurate result xi = (6.85/r) to the 2.07 + or - 0.09 power. It was not possible, and is arguably not relevant, to derive a velocity dispersion and a density parameter from this relatively small, relatively local sample.