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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. http://resolver.caltech.edu/CaltechAUTHORS:20141125-152651303

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Abstract

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.


Item Type:Article
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http://dx.doi.org/10.1073/pnas.95.1.8 DOIArticle
http://www.pnas.org/content/95/1/8PublisherArticle
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.
Record Number:CaltechAUTHORS:20141125-152651303
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141125-152651303
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
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Nov 2014 01:43
Last Modified:27 Nov 2014 01:43

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