Fig. 5.

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Variation in the Fourier parameters of BL Her models in the G band as a function of period and the convective parameter sets A (pink), B (orange), C (yellow), and D (green). Fourier parameters from the BL Her stars in the All Sky region from Gaia DR3 are over-plotted (in navy crosses) for an easier comparison with the theoretical Fourier parameter space.
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