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Fig. 13.

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Similar to Figs. 10 and 12, but in angular momentum (Xg,Yg) space for the G3RV2 stars cross-matched with Galah (left), AstroNN (centre), and LAMOST (right). Density distribution (first row), colour-coded by the mean [Fe/H] (second row), the mean [Fe/H] for thin-disk stars (low-α sequence, third row), and the residual [Fe/H] distribution for low-α stars (bottom row). The locations of tightly wound trailing regions of the higher mean metallicity (δ[Fe/H] ≈ 0.05 dex) correlate with the stellar overdensities associated with the main MW spiral arms.

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