Image Details
Caption: Figure 23.
The [X/Fe] vs. RGuide trend for the α-elements (O, Mg, Si, S, Ca, Ti). The color bar indicates the age of the cluster in log(Age) from T. Cantat-Gaudin et al. (2020). Clusters with a 1σ scatter greater than 0.2 dex for a specific element were not used to determine the fit (solid blue line) and are not plotted. The derived gradient and number of clusters (N) are shown in each panel.
© 2026. The Author(s). Published by the American Astronomical Society.