Physics
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.275..514g&link_type=abstract
Nature, vol. 275, Oct. 12, 1978, p. 514, 515.
Physics
9
Cosmology, Galactic Clusters, Hubble Diagram, Red Shift, Turbulence Effects, Virgo Galactic Cluster, Galactic Rotation, Hubble Constant, Radial Velocity
Scientific paper
Evidence is presented for a significant and substantial departure from the redshift expected for the Virgo cluster of galaxies on the basis of the Hubble diagram. A peculiar radial velocity of 658 + or - 96 km/s is obtained for the Virgo cluster, indicating that the turbulence recently observed for the Galaxy's motion within the Hubble expansion also exists elsewhere in the universe. Values of the Hubble constant are derived from the predicted mean redshift and previously published distances for the Virgo cluster. The best estimate for the Hubble constant is found to be 43.4 + or - 2.6 km/s per Mpc, which leads to an observable universe about 1/4 to 1/3 larger than previously recognized. The corresponding Hubble time is shown to be 22.5 + or -1.4 billion years, suggesting that there may have been some turbulence-related slowing of the expansion, delay in star formation, or both.
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