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Globular clusters, Hipparcos, and the age of  the  galaxy

Reid, Neill (1998) Globular clusters, Hipparcos, and the age of  the  galaxy. Proceedings of the National Academy of Sciences of the United States of America, 95 (1). pp. 8-12. ISSN 0027-8424. PMCID PMC34182. doi:10.1073/pnas.95.1.8.

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We discuss the impact of the results from the recent Hipparcos astrometric satellite on distance estimates of galactic globular clusters. Recalibrating the clusters not only implies a relatively small change in the distance to the Large Magellanic Cloud, and hence a rescaling of several estimates of the Hubble constant, but also leads to significantly younger cluster ages. Although the data are not yet conclusive, the results so far point to a likely resolution of the apparent paradox of a universe younger than its constituents, without requiring significant modifications to simple cosmological models.

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Additional Information:© 1998 National Academy of Sciences. This paper was presented at a colloquium entitled ‘‘The Age of the Universe, Dark Matter, and Structure Formation,’’ organized by David N. Schramm, held March 21–23, 1997, sponsored by the National Academy of Sciences at the Beckman Center in Irvine, CA.
Issue or Number:1
PubMed Central ID:PMC34182
Record Number:CaltechAUTHORS:20141125-152651303
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Official Citation:Neill Reid Globular clusters, Hipparcos, and the age of the galaxy PNAS 1998 95 (1) 8-12
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52166
Deposited By: Tony Diaz
Deposited On:27 Nov 2014 01:43
Last Modified:10 Nov 2021 19:22

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