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Fig. 4


Location of our sources in the HR diagram as listed in Table 7, together with those of the CODEX models and the 3D model st28gm06n06. Shown are the positions of individual CODEX models with different symbols for each of the four series, where the orange symbols represent the locations of the hypothetical non-pulsating parent star. The orange symbol and error bars of the 3D model denote the average and standard deviation of different snapshots of the 3D model. Individual snapshots of the 3D model are not shown. Also shown are stellar evolutionary tracks of the early AGB from Lagarde et al. (2012) for 1.0, 1.25, 1.5, and 2.0 solar masses and solar chemical composition.

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