1997/09/18 by Y. K. Ng, Ng, Y. K., G. Bertelli +5
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9709182
4 pages LaTeX, 3 postscript figures, to appear in proceedings ``1997 Pacific RIM conference on Stellar Astrophysics'', August 13-16, 1997, Hong Kong (China), K.L. Chan, K.S. Cheng and H.P. Singh (eds.), ASP Conference Series
arxiv created 1997/09/18 · openalex publication_date 1997/09/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
New ages are computed for stars in the Solar Neighbourhood from the Edvardsson et al. (1993) data set. Distances derived from the Hipparcos parallaxes were adopted to obtain reliable ages (uncertainty less than 12%) for a subset of stars. There is no apparent age-metallicity relation for stars with an age less than 10 Gyr. Only if we consider older stars a slope of ~0.07 dex/Gyr appears. This relation is compared with those obtained from other methods, i.e. galactic open clusters, stellar population synthesis (star counts), and chemical evolution models.