Abstract
The simplistic but ubiquitous Mixing Length Theory (MLT) formalism is used to model convective energy transport within 1D stellar evolution calculations. The formalism relies on the free parameter α MLT, which must be independently calibrated within each stellar evolution program and for any given set of physical assumptions. We present a solar calibration of α MLT appropriate for use with the ÆSOPUS opacities, which have recently been made available for use with the MESA stellar evolution software. We report a calibrated value of α MLT = 1.931 and demonstrate the impact of using an appropriately calibrated value in simulations of a 3M ⊙ asymptotic giant branch star.
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