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Pulsating Delta Scuti stars may have a thing or two to teach us about stellar opacity calculations. If one uses stellar models to match the pulsation frequencies of well studied Delta Scuti stars, then the stellar model predicted luminosity and Teff disagree with the measured values. Daszyńska-Daszkiewicz, Walczak, Pamyatnykh, et al.
https://arxiv.org/abs/2212.14294