Image Details
Caption: Figure B1.
[O/Fe] histogram for the interval −0.7 < [Fe/H] < − 0.2, 4 < R/kpc < 12, and ∣z∣ < 3 kpc. The dark and light-shaded areas correspond to the contribution of stars born in the inner part of the galaxy, i.e., R < 4 kpc, with orbital circularity ηs < 0.9 and ηs > 0.9, respectively. Overall, from the stars born in the inner part of the galaxy that contribute to the α-rich peak at the disk, there is a larger fraction with hotter orbits in the clumpy models.
© 2026. The Author(s). Published by the American Astronomical Society.