Trends in copper and zinc abundances for disk and halo stars

Details Trends in copper and zinc abundances for disk and halo stars Trends in copper and zinc abundances for disk and halo stars

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...246..354s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 246, no. 2, June 1991, p. 354-367.

Astronomy and Astrophysics

Astrophysics

174

Abundance, Galactic Evolution, Globular Clusters, Metallicity, Nuclear Reactions, Stellar Composition, Copper, Halos, Iron, Stellar Temperature, Supernovae, Zinc

Scientific paper

Results are presented of spectroscopic investigations of the Cu and Zn abundances in 40 disk and halo stars. The results confirmed and extended the previous findings of Sneden and Crocker (1988). It is shown that the Zn abundances closely track the overall metallicities: Zn/M = +0.04 + or - 0.02. However, all metal-poor stars displayed Cu deficiencies, which appear to vary linearly with metallicity: Cu/M = 0.38(M/H) + 0.15. The Cu-abundance trend in giants of 15 globular clusters is in good agreement with that of the field stars. The nucleosynthesis implications of the obtained results are discussed.

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