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Extending the [C/N]–Age Calibration: Using Globular Clusters to Explore Older and Metal-poor Populations

Authors: Taylor Spoo, Katelyn Thomas, Ellie Kaleo Toguchi-Tani, Jonah Otto, Natalie Myers, Jamie Tayar, Jessica S. Schonhut-Stasik, Matthew Shetrone, Alessa Ibrahim Wiggins, John Donor, Peter M. Frinchaboy

Taylor Spoo et al 2025 The Astronomical Journal 170 .

Provider: AAS Journals

Caption: Figure 3.

[Al/Fe]–[Mg/Fe], [O/Fe]–[Na/Fe], and [Al/Fe]–[Si/Fe] (anti)correlation plots for globular clusters M 4 (top set) and M 5 (bottom set) colored by [Fe/H]. Black dashed lines represent functions to isolate the two populations of stars within the RGB sample.

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