Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...225..351r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 225, no. 2, Nov. 1989, p. 351-357.
Astronomy and Astrophysics
Astrophysics
41
Chemical Evolution, Globular Clusters, Magellanic Clouds, Metallicity, Red Giant Stars, Abundance, Iron, Spectral Line Width, Stellar Evolution, Supergiant Stars
Scientific paper
A high dispersion analysis of a red supergiant in the young globular cluster NGC 1818 in the Large Magellanic Cloud is presented. The main results are: the iron peak elements are deficient by -0.8 to -1.0 dex; the light elements are slightly enhanced as well as the rare earths. The lithium line at 6707 A is visible. The low metal abundance does not fit into the usual picture of a smooth age-metallicity relation in the LMC. It furthermore weakens the significance of globular clusters as tracers of chemical evolution.
Richtler Tom
Spite Francois
Spite Monique
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