Hercules supercluster. II. Analysis

Journal Article · Fri Feb 01 04:00:00 EST 1980 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/157675· OSTI ID:5259162

Tarenghi, M; Chincarini, G; Rood, H J; Thompson, L A

The almost complete sample of more than 150 redshifts for galaxies brighter than m/sub p/=15.8 mag in a 28 square degree field in Hercules by Tarenghi et al. is used to examine the cosmography of a 60,000 Mpc/sup 3/ conical volume of space. It contains a supercluster of Abell clusters with a depth approx.100 Mpc, a vacant ''void'' also with a depth approx.100 Mpc, and a structure wider than 12 Mpc which could be part of a more extensive system of small groups of galaxies. Properties of individual rich clusters in the Hercules supercluster are derived, but they are uncertain because the clusters merge into one another, so that it is difficult to identify them and their member of galaxies unambiguously. However, those regions in Hercules containing the largest proportion of early-type galaxies show the least evidence for gravitational relaxation. A difference may exist between the luminosity function of clusters of galaxies and the luminosity function of the foreground sheet.

• Research Organization: European Southern Observatory
• OSTI ID: 5259162
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 235:3; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGY
GALAXY CLUSTERS
GRAVITATION
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RED SHIFT