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• W2102688755 endingPage "2310" @default.
• W2102688755 startingPage "2285" @default.
• W2102688755 abstract "High-resolution integrated light (IL) spectroscopy provides detailed abundances of distant globular clusters whose stars cannot be resolved. Abundance comparisons with other systems (e.g. for chemical tagging) require understanding the systematic offsets that can occur between clusters, such as those due to uncertainties in the underlying stellar population. This paper analyses high-resolution IL spectra of the Galactic globular clusters 47 Tuc, M3, M13, NGC 7006, and M15 to (1) quantify potential systematic uncertainties in Fe, Ca, Ti, Ni, Ba, and Eu and (2) identify the most stable abundance ratios that will be useful in future analyses of unresolved targets. When stellar populations are well modelled, uncertainties are ∼0.1–0.2 dex based on sensitivities to the atmospheric parameters alone; in the worst-case scenarios, uncertainties can rise to 0.2–0.4 dex. The [Ca i/Fe i] ratio is identified as the optimal integrated [α/Fe] indicator (with offsets ≲ 0.1 dex), while [Ni i/Fe i] is also extremely stable to within ≲ 0.1 dex. The [Ba ii/Eu ii] ratios are also stable when the underlying populations are well modelled and may also be useful for chemical tagging." @default.
• W2102688755 created "2016-06-24" @default.
• W2102688755 creator A5011033572 @default.
• W2102688755 creator A5014815473 @default.
• W2102688755 creator A5020765843 @default.
• W2102688755 creator A5054802275 @default.
• W2102688755 creator A5077504658 @default.
• W2102688755 date "2014-07-29" @default.
• W2102688755 modified "2023-09-27" @default.
• W2102688755 title "Optimal integrated abundances for chemical tagging of extragalactic globular clusters★" @default.
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• W2102688755 doi "https://doi.org/10.1093/mnras/stu1296" @default.

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