Abstract
Members of the Galaxy components are identified according to stellar ages, metallicities and galactic orbits. The local thin disk is found to have a maximum age of 11 billion years and a small abundance scatter partially controlled by the radial gradient of abundances. Metal-rich and old metal-poor stars belong to inner galactic populations and SMRs represent the ultimate star generation in the bulge. The thick disk forms a smooth transition between the halo and thin disk.
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Grenon, M. The chemical evolution of the galactic disc from the kinematics and metallicities of proper motion stars. Astrophys Space Sci 156, 29–37 (1989). https://doi.org/10.1007/BF00646341
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DOI: https://doi.org/10.1007/BF00646341