An observational age-metallicity relation for the Galaxy

Details An observational age-metallicity relation for the Galaxy An observational age-metallicity relation for the Galaxy

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247...35s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 1, July 1991, p. 35-44.

Astronomy and Astrophysics

Astrophysics

31

Chemical Evolution, Metallicity, Milky Way Galaxy, Disk Galaxies, Star Clusters

Scientific paper

An observational Age-Metallicity Diagram for the Galaxy has been constructed on the base of star cluster data available in the literature. This diagram exhibits two independent and simultaneous metallicity enhancement processes identified with two dynamical galactic substructures: the thin and the thick disks. Within the observational uncertainties both these processes can be satisfactory approximated by Infall-Inflow models of the chemical evolution with different high, although rapidly decaying with time, Star Formation and Infall Rates. The comparison of the galactic age-metallicity relations with that for the Large Magellanic Cloud shows some similarities between processes of the chemical enhancement in the Large Magellanic Cloud and the Thin Disk subsystem in the Galaxy.

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