Published in "The Minnesota lectures on clusters of
galaxies and large-scale structure". San Francisco,
CA, Astronomical Society of the Pacific, 1988, p. 19-39.
For a Pdf version of the article, click
here.
For a Postscript version of the article, click
here.
Abstract. Contradictions between cosmological theory and observations are greatly eased if luminous galaxies are not reliable tracers of the distribution of mass. However, an analysis of existing data suggests that light and mass do have the same distribution on scales larger than about one hundred kiloparsecs. This implies that the cosmic density parameter, 0.15, and that baryons probably dominate the mass of the universe.
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