A Lower Limit on the Age of the Universe

  title={A Lower Limit on the Age of the Universe},
  author={Brian Chaboyer and Pierre. Demarque and Peter J. Kernan and Lawrence Krauss},
  pages={957 - 961}
A detailed numerical study was designed and conducted to estimate the absolute age and the uncertainty in age (with confidence limits) of the oldest globular clusters in our galaxy, and hence to put a robust lower bound on the age of the universe. Estimates of the uncertainty range and distribution in the input parameters of stellar evolution codes were used to produce 1000 Monte Carlo realizations of stellar isochrones, which were then used to derive ages for the 17 oldest globular clusters. A… 
Theoretical Uncertainties in the Subgiant Mass-Age Relation and the Absolute Age of ω Centauri
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Absolute ages of globular clusters and the age of the universe
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The opal equation of state and low-metallicity isochrones
The Yale stellar evolution code has been modified to use the OPAL equation of state tables (Rogers 1994). Stellar models and isochrones were constructed for low metallicity systems ($-2.8 \le [Fe/H]
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Chemical composition and atmospheric parameters of metal-poor halo stars
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