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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 5.

Panels (a) and (b): [Al/Fe] vs. [Mg/Fe] of RGB canonical and anomalous stars, respectively. Blue and red lines indicate the best-fit straight line used to rotate their reference frame. Panels (c1) and (c2): rotated (xrot, yrot) coordinates for canonical stars and yrot kernel distribution. Panels (d1) and (d2): the same as c1 and c2 but for anomalous stars. Panels (e) and (f): the same as panels (a) and (b) but with 1P, 2P, AI, and AII stars colored in green, violet, khaki, and purple, respectively.

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