Journal of The Korean Astronomical Society (천문학회지)
- Volume 12 Issue 1
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- Pages.11-15
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- 1979
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
ABUNDANCE VARIATION AMONG GIANT STARS IN THE CENTRAL PART OF 47 TUC
Abstract
Four stars in the central region of 47 Tuc were observed spectroscopically using IPCS. The observed result showed that two asymptotic giant branch stars have the excess of nitrogen compared with the red giant branch stars, which indicates that the radial colour gradient in a globular clursters, at least for 47 Tuc, comes from the abundance gradient among the giant stars.
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