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Type IIP supernovae (SNe IIP) mark the explosive death of red supergiants(RSGs), evolved massive stars with an extended hydrogen envelope. They are themost common supernova type and allow for benchmarking of supernova explosionmodels by statistical comparison to observed population properties rather thancomparing individual models and events. We construct a large synthetic set ofSNe IIP light curves (LCs) using the radiation hydrodynamics code \texttt{SNEC}and explosion energies and nickel masses obtained from an efficientsemi-analytic model for two different sets of stellar progenitor models. Bydirect comparison we demonstrate that the semi-analytic model yields verysimilar predictions as alternative phenomenological explosion models based onone-dimensional simulations. We find systematic differences of a factor of$\mathord{\sim}2$ in plateau luminosities between the two progenitor sets dueto different stellar radii, which highlights the importance of the RSG envelopestructure as a major uncertainty in interpreting LCs of SNe IIP. A comparisonto a volume-limited sample of observed SNe IIP shows decent agreement inplateau luminosity, plateau duration and nickel mass for at least one of thesynthetic LC sets. The models, however, do not produce sufficient events withvery small nickel mass $M_\mathrm{Ni}<0.01\,M_\odot$ and predict ananticorrelation between plateau luminosity and plateau duration that is notpresent in the observed sample, a result that warrants further study. Ourresults suggest that a better understanding of RSG stellar structure is no lessimportant for reliably explaining the light curves of SNe IIP than theexplosion physics.

Light Curves of Type IIP Supernovae from Neutrino-driven Explosions of Red Supergiants Obtained by a Semi-analytic Approach