Calibration of the [C/N] and [Y/Mg] chemical clocks with asteroseismic ages from the TESS space mission

Open Access

Fig. 9

[Y/Mg] as a function of stellar age for thin- and thick-disc stars. Linear fits for different Galactic regions and their 95% confidence intervals are shown. Stars with R_mean < 7.5 kpc are attributed to the inner Galactic disc, the solar region is at 7.5 ≤ R_mean ≤ 8.5 kpc, and the outer disc is at R_mean > 8. 5 kpc.

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