The brightness of the red giant branch tip - Theoretical framework, a set of reference models, and predicted observables

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Fig. 2

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Differences in TRGB luminosity as in top panel of Fig. 1, but for models computed using the concordance physics. GARSTEC models have been computed with Δt_min = 3 kyr. Dotted lines indicate the estimated 1σ theoretical uncertainty excluding electron screening (Sect. 2).

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