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Fig. 7


Result of the three-parameter fitting for the pulsating (left panel) and non-pulsating (right panel) regimes. The parameters of the 2D model are shown by orange lines for both regimes. The reconstructed parameters with the direct three-parameter fitting using the 1D LHD grid are shown by blue lines. Results using the ionization balance are shown by green, brown, and solid black lines. For the pulsating regime, the result of the experiment with a gravity limitfor the maximum compression phase is shown by the dashed black line. The relative RMS deviation in line strengths between the 2D and 1D models is shown by the solid blue and black lines for the direct three-parameter fitting and for a fitting using the ionization balance condition, respectively.

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