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Fig. 4


Comparison of Atlas 12 atmosphere models with Teff = 5600 log  g = 4.5, Vturb = 1.0, [α/Fe] = +0.4 and [Fe/H] = −2.5 (blue line and triangles), [Fe/H] = −1.5 (black line), and [Fe/H] = −0.5 (red line and diamonds). Top to bottom: temperature for the three models, temperature difference (red line, [Fe/H] = −0.5 – [Fe/H] = −1.5; blue line, [Fe/H] = −2.5 – [Fe/H] = −1.5), pressure in g cm-2, pressure difference, all plotted vs. τross.

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