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A Distance Scale from the IR Magnitude/HI Velocity Width Relation
Published online by Cambridge University Press: 19 July 2016
Abstract
A summary is given of recent work using the IR/H I method, arguably the best global distance indicator presently available. Reflex motion toward the microwave dipole anisotropy has been seen relative to a sample of nearby galaxy clusters; this result is contrasted with the somewhat divergent conclusions obtained by Burstein et al. from a similar study of elliptical galaxies. A best guess calibration of the IR/H I zero point continues to lead to a high value for the expansion rate. This finding cannot be explained by appealing to Malmquist bias, as demonstrated by a straightforward linearity test of the velocity-distance relation. However, all current estimates of the Hubble constant are plagued by the large uncertainties to the distances of nearby calibrating galaxies, a problem whose full solution probably must await the launch of the Hubble Space Telescope.
- Type
- Chapter III. The Classical Quantities of Cosmology
- Information
- Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 187 - 195
- Copyright
- Copyright © Reidel 1987
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