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Tracing M22’s Origins: Spatial and Chemical Constraints on Its Formation History

  • Authors: Emanuele Dondoglio, Antonino P. Milone, Randa Asa'd, Anna F. Marino, Alessandra Mastrobuono-Battisti, Fabrizio Muratore, Tuila Ziliotto, Emanuele Bortolan, Giacomo Cordoni, Maria Vittoria Legnardi, Edoardo P. Lagioia, Marco Tailo

Emanuele Dondoglio et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 11.

Left: [Al/Fe] vs. [Fe/H] of M22. Blue and red color maps indicate the soothed distribution of its canonical and anomalous stars, respectively. Middle: [Al/Fe] vs. [Fe/H] of ωCentauri. Brown dashed–dotted lines separate the lower, middle, and upper streams. Right: same but zoomed-in view of the ωCentauri Fe-rich end, overlaid to the canonical and anomalous stars smoothed distributions.

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