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Fig. 4


Distributions of the BIC value differences between the best model chosen by the automated two-Gaussian procedure and the alternative model without eclipse 1 (thick green hatched histogram), the alternative model without eclipse 2 (thin blue histogram), and the alternative model without the ellipsoidal component (dashed red histogram). The distributions are shown for best models that contain two Gaussians and an ellipsoidal-like component (top panel), two Gaussians only (second panel from top), one Gaussian and an ellipsoidal-like component (third panel from top), one Gaussian only (fourth panel from top), and an ellipsoidal-like component only (bottom panel). The histograms are plotted as a function of the logarithm (base 10) of the BIC value differences, with a bin width of 0.2. The number of models for which the alternative model did not converge or had a negative infinite BIC value is shown on the right of each panel at an x-axis value of 7 (for the eclipse 1 component), 6.8 (for the eclipse 2 component) and 6.6 (for the ellipsoidal component). In the top panel, the Y-axis is limited to 700 for a better visibility, 1299 models having no alternative model without eclipse 1.

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