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The Oldest Stellar Populations and the Ageof the Universe

Published online by Cambridge University Press:  25 September 2002

O. Bienaymé ,
C. Turon  and
C. Cacciari
C. Cacciari*
Affiliation:
Osservatorio Astronomico, Via Ranzani 1, 40127 Bologna, Italy
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Abstract

The study of the oldest stellar populations in the Galaxy providesimportant cosmological information (e.g. a lower limit to the age ofthe Universe) and helps constraining models of galaxy formation. Themost commonly used stellar age indicators are reviewed and discussed,and the impact of GAIA on these topics is estimated.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 2: GAIA: A European Space Project , 2002 , pp. 163 - 170
Copyright
© EAS, EDP Sciences, 2002

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