Revised ages for the stars in the solar neighbourhood

Details Revised ages for the stars in the solar neighbourhood Revised ages for the stars in the solar neighbourhood

1997-07-03

arxiv.org/abs/astro-ph/9707043v2

Astronomy and Astrophysics

Astrophysics

14 pages LaTeX with 8 tables, to be published in A&A Main Journal; removed two figures, replaced two others and adjusted part

Scientific paper

New ages are computed for the stars from the Edvardsson et al. (1993) data set. The revised values are systematically larger toward older ages (t>4 Gyr), while they are slightly lower for t<4 Gyr. A similar, but considerably smaller trend is present when the ages are computed with the distances based on Hipparcos parallaxes. The resulting age-metallicity relation has a small, but distinct slope of about 0.07 dex/Gyr

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