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Global Value of Hubble Constant

Published online by Cambridge University Press:  25 April 2016

N. Visvanathan
N. Visvanathan*
Affiliation:
Mount Stromlo and Siding Spring Observatories, A.N.U.
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Extract

An accurate determination of the global Hubble Constant needs distance to objects well outside the Local Supercluster with redshift greater than ~ 2000 km/s. This is mainly to reduce the effect of the peculiar motion of the Local Group on the measured redshifts as well as to get away from the gravitational influence of the nearby high density regions.

The present practice of deriving distances involves identifying objects such as Cepheids and brightest red stars both in the Local Group galaxies as well as in the distant galaxies. This method cannot be used for galaxies at the large distances.

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Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 4 , 1982 , pp. 419 - 422
Copyright
Copyright © Astronomical Society of Australia 1982

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