Models of Metal‐poor Stars with Gravitational Settling and Radiative Accelerations. II. The Age of the Oldest Stars

Isochrones for ages between 12 and 18 Gyr have been derived from the evolutionary tracks presented in Paper I (Richard et al.) for masses from 0.5 to 1.0 M☉ and initial chemical abundances corresponding to (1) Y = 0.2352, Z = 1.69 × 10-4 ([Fe/H] = -2.31, [α/Fe] = 0.3) and (2) Y = 0.2370, Z = 1.69 × ... View More