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1998AJ....116...31B - Astron. J., 116, 31-36 (1998/July-0)
Ω, age, and H0 implications of recent Hubble space telescope data in the Coma Cluster.
BAUM W.A.
Abstract (from CDS):
In a zero-Λ universe, the implied mass density is Ω_M_ = 0.41 with only weak constraints on either higher or lower Ω_M_ values. In a flat universe with Ω_M_ + ΩΛ = 1, however, the implied mass density is Ω_M_ = 0.62, and the uncertainty in it is asymmetric. For example, a critical-density universe with Ω_M_ = 1.0 and ΩΛ = 0.0 (for which H0 = 57 km.s–1.Mpc–1 and t0 = 11.4 Gyr) differs by only 0.7 σ, and is therefore not strongly negated, whereas a low-density universe with Ω_M_ = 0.1 and ΩΛ = 0.9 (for which H0 = 74 km.s–1.Mpc–1 and t0 = 17.0 Gyr) differs by 3 σ, and therefore appears unlikely.
Abstract Copyright: ∼
Journal keyword(s): Cosmology: Observations - Galaxies: Clusters: Individual: Name: Coma - Cosmology: Large-Scale Structure of Universe
Simbad objects: 7
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