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- W4225535302 abstract "ABSTRACT Using spectra obtained with the VLT/FORS2 and Gemini-S/GMOS-S instruments, we have investigated carbon, nitrogen, and sodium abundances in a sample of red giant members of the Small Magellanic Cloud star cluster Kron 3. The metallicity and luminosity of the cluster are comparable to those of Galactic globular clusters but it is notably younger (age ≈ 6.5 Gyr). We have measured the strengths of the CN and CH molecular bands, finding a bimodal CN band-strength distribution and a CH/CN anticorrelation. Application of spectrum synthesis techniques reveals that the difference in the mean [N/Fe] and [C/Fe] values for the CN-strong and CN-weak stars are Δ <[N/Fe]> = 0.63 ± 0.16 dex and Δ <[C/Fe]> = −0.01 ± 0.07 dex after applying corrections for evolutionary mixing. We have also measured sodium abundances from the Na D lines finding an observed range in [Na/Fe] of ∼0.6 dex that correlates positively with the [N/Fe] values and a Δ <[Na/Fe]> = 0.12 ± 0.12 dex. While the statistical significance of the sodium abundance difference is not high, the observed correlation between the Na and N abundances supports its existence. The outcome represents the first star-by-star demonstration of correlated abundance variations involving sodium in an intermediate-age star cluster. The results add to existing photometric and spectroscopic indications of the presence of multiple populations in intermediate-age clusters with masses in excess of ∼105 M⊙. It confirms that the mechanism(s) responsible for the multiple populations in ancient globular clusters cannot solely be an early cosmological effect applying only in old clusters." @default.
- W4225535302 created "2022-05-05" @default.
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- W4225535302 creator A5070976583 @default.
- W4225535302 date "2022-06-21" @default.
- W4225535302 modified "2023-10-17" @default.
- W4225535302 title "Evidence of globular cluster abundance anomalies in the SMC intermediate-age cluster Kron 3" @default.
- W4225535302 cites W1536034067 @default.
- W4225535302 cites W1910315639 @default.
- W4225535302 cites W1979023753 @default.
- W4225535302 cites W1979257798 @default.
- W4225535302 cites W1981358240 @default.
- W4225535302 cites W1982931900 @default.
- W4225535302 cites W1991353966 @default.
- W4225535302 cites W1995920691 @default.
- W4225535302 cites W2016888075 @default.
- W4225535302 cites W2026814570 @default.
- W4225535302 cites W2027686843 @default.
- W4225535302 cites W2028925688 @default.
- W4225535302 cites W2030838397 @default.
- W4225535302 cites W2040047395 @default.
- W4225535302 cites W2040060951 @default.
- W4225535302 cites W2045279789 @default.
- W4225535302 cites W2058691046 @default.
- W4225535302 cites W2070566705 @default.
- W4225535302 cites W2075667030 @default.
- W4225535302 cites W2076615085 @default.
- W4225535302 cites W2076735446 @default.
- W4225535302 cites W2077067343 @default.
- W4225535302 cites W2079277828 @default.
- W4225535302 cites W2081944412 @default.
- W4225535302 cites W2084820966 @default.
- W4225535302 cites W2089264815 @default.
- W4225535302 cites W2102155954 @default.
- W4225535302 cites W2106695319 @default.
- W4225535302 cites W2138742840 @default.
- W4225535302 cites W2153483400 @default.
- W4225535302 cites W2159752461 @default.
- W4225535302 cites W2179727708 @default.
- W4225535302 cites W2268382917 @default.
- W4225535302 cites W2284959507 @default.
- W4225535302 cites W2462128905 @default.
- W4225535302 cites W2482631450 @default.
- W4225535302 cites W2485288865 @default.
- W4225535302 cites W2508232306 @default.
- W4225535302 cites W2514977246 @default.
- W4225535302 cites W2529747302 @default.
- W4225535302 cites W2558425474 @default.
- W4225535302 cites W2595388054 @default.
- W4225535302 cites W2601053151 @default.
- W4225535302 cites W2762030776 @default.
- W4225535302 cites W2775727542 @default.
- W4225535302 cites W2786229269 @default.
- W4225535302 cites W2796582965 @default.
- W4225535302 cites W2797453126 @default.
- W4225535302 cites W2798986949 @default.
- W4225535302 cites W2893152787 @default.
- W4225535302 cites W2908645855 @default.
- W4225535302 cites W2911745589 @default.
- W4225535302 cites W2913757040 @default.
- W4225535302 cites W2950699083 @default.
- W4225535302 cites W2953135120 @default.
- W4225535302 cites W2982400236 @default.
- W4225535302 cites W2982421620 @default.
- W4225535302 cites W2987938924 @default.
- W4225535302 cites W2999377608 @default.
- W4225535302 cites W3084323964 @default.
- W4225535302 cites W3087143042 @default.
- W4225535302 cites W3098130767 @default.
- W4225535302 cites W3099635862 @default.
- W4225535302 cites W3100090811 @default.
- W4225535302 cites W3100288111 @default.
- W4225535302 cites W3102254090 @default.
- W4225535302 cites W3102379822 @default.
- W4225535302 cites W3103424105 @default.
- W4225535302 cites W3103879662 @default.
- W4225535302 cites W3104006681 @default.
- W4225535302 cites W3104144624 @default.
- W4225535302 cites W3104320172 @default.
- W4225535302 cites W3104953975 @default.
- W4225535302 cites W3106525491 @default.
- W4225535302 cites W3109194476 @default.
- W4225535302 cites W3123038787 @default.
- W4225535302 cites W3123230219 @default.
- W4225535302 cites W3125247942 @default.
- W4225535302 cites W3155261307 @default.
- W4225535302 cites W3166820106 @default.
- W4225535302 cites W3175778071 @default.
- W4225535302 cites W4200238364 @default.
- W4225535302 cites W4292956978 @default.
- W4225535302 cites W4297845719 @default.
- W4225535302 cites W4299304847 @default.