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NGC 6388: chemical composition of its 8 cool giants

Published online by Cambridge University Press:  23 December 2005

G. Wallerstein ,
V. Kovtyukh  and
S. Andrievsky
G. Wallerstein
Affiliation:
Department of Astronomy, University of Washington, Seattle, WA 98195 email: [email protected]
V. Kovtyukh
Affiliation:
Department of Astronomy and Astronomical Observatory, Odessa National University, T.G. Shevchenko Park, 65014, Odessa, Ukraine email: [email protected]
S. Andrievsky
Affiliation:
Department of Astronomy and Astronomical Observatory, Odessa National University, T.G. Shevchenko Park, 65014, Odessa, Ukraine email: [email protected]
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Abstract

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Eight cool giants in the unusual globular cluster NGC 6388 have been investigated in order to derive their elemental abundances. Average relative-to-solar abundance of iron is about –0.8. We have found that oxygen abundance is reduced as compared to most stars of a similar metallicity. The reduced carbon as compared to oxygen is at the level to be expected for red giant tip stars. Abundance of the rest of investigated elements are within the expected limits for the globular cluster stars.

Keywords

Globular clusters: individual (NGC 6388)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S228: From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution , May 2005 , pp. 413 - 414
Copyright
© 2005 International Astronomical Union