Effect of convective outer layers modeling on non-adiabatic seismic observables of δ Scuti stars

Context. The identification of pulsation modes in δ Scuti stars is mandatory to constrain the theoretical stellar models. The non-adiabatic observables used in the photometric identification methods depend, however, on convection modeling in the external layers. Aims. To determine how the treatment of convection in the atmospheric and sub-atmospheric layers affects the mode identification, and what information about the thermal structure of the external layers can be obtained from amplitude ratios and phase lags in Strömgren photometric