Comparison of the predicted flux (mean and its variation, blue) with corresponding observed quantities (black). The predicted and observed fluxes (IUE) were smoothed by a Gaussian filter with a dispersion of 10 Å. Overplotted is the flux calculated for a slightly supersolar chemical composition with εMg = −4.1, εSi = −3.7, εCr = −5.9, εMn = −5.7, and εFe = −4.2.
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