The peculiar velocity field in the local supercluster

Journal Article · Thu Apr 15 04:00:00 EST 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154280· OSTI ID:7361347

Peebles, P J.E.

A general method of estimating the peculiar velocity field expected, under the gravitational instability picture, around the outer parts of a mass concentration like a cluster of galaxies is derived and applied to a preliminary analysis of the Sandage-Tammmann data on the distances and redshifts of nearby spiral galaxies. It is shown that there is evidence of a small peculiar velocity field of the sort expected. The field, if real, is consistent with a cosmologically flat universe, ..cap omega..=1; equally well, with a low-density cosmological model, ..cap omega..approx. =0.1. It is concluded that the data on the local peculiar velocity field do not yet offer a strong constraint on the density parameter ..cap omega... (AIP)

• Research Organization: Joseph Henry Laborabories, Physics Department, Princeton University
• OSTI ID: 7361347
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 205:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
640106 -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DENSITY
GALAXY CLUSTERS
MASS
PHYSICAL PROPERTIES
RED SHIFT
UNIVERSE
VELOCITY