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The Abundance of the LMC Globular Cluster NGC 2213

Published online by Cambridge University Press:  19 July 2016

Doug Geisler
Doug Geisler*
Affiliation:
Cerro Tololo Inter-American Observatory

Abstract

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A new technique for determining accurate abundances in distant giants - Washington CCD photometry - has been applied to the intermediate-age LMC globular cluster NGC 2213. An abundance of −0.40 ± 0.15 was found from the analysis of 42 giants with V < 20, using data obtained with the 1.5 m telescope. Combined with published main-sequence photometry, the derived abundance indicates a true LMC distance modulus of 18.2 ± 0.2. A likely CN strong giant near the tip of the giant branch is identified. Abundances are also derived for a sample of 27 field giants. Results indicate that one could determine both the age and abundance of Magellanic Cloud clusters with high accuracy from Washington photometry using the 4 m in less than one hour of observing time per cluster.

Type
Chapter VIII. Poster Papers on Cluster Systems in Nearby Galaxies
Information
Symposium - International Astronomical Union , Volume 126: The Harlow-Shapley Symposium on Globular Cluster Systems in Galaxies , 1988 , pp. 579 - 580
Copyright
Copyright © Kluwer 1988 

References

REFERENCES

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