The chemical evolution of the solar neighborhood. I - A bias-free reduction technique and data sample

Details The chemical evolution of the solar neighborhood. I - A bias-free reduction technique and data sample The chemical evolution of the solar neighborhood. I - A bias-free reduction technique and data sample

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apjs...44....1t&link_type=abstract

Astrophysical Journal Supplement Series, vol. 44, Sept. 1980, p. 1-29.

Astronomy and Astrophysics

Astrophysics

49

Chemical Evolution, Galactic Evolution, Milky Way Galaxy, Solar System, Abundance, Astronomical Photometry, Disk Galaxies, H Beta Line, Sun, Ubv Spectra

Scientific paper

The possible ways of measuring the age-metallicity relation for the galactic disk in the neighborhood of the sun are discussed. It is shown that the use of a field star sample chosen on the basis of effective temperature introduces a bias which results in a monotonic increase in the metal abundance of the disk with time. However, if the age-metallicity relation for the disk can be shown to satisfy certain criteria, the bias introduced in such a sample can be neglected: the galactic disk apparently satisfies the criteria. It is concluded that a sample analyzed through the use of uvby and H(beta) photometry in conjunction with a self-consistent set of theoretical isochrones provides the least biased, most accurate estimate of the age-metallicity relation for the disk.

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