Ejecta Composition Effects on Kilonova Parameter Inference

Kilonovae, one source of electromagnetic emission associated with neutron star mergers, are powered by the decay of radioactive isotopes in the neutron-rich merger ejecta. Variations in the elemental composition of the merger ejecta will affect the electromagnetic emission of a given kilonova and thus influence the model parameters inferred from such an event. In this work, we present an analysis comparing the mass-weighted elemental compositions of our radiative transfer simulations to the mass fractions of elements in the Sun. We explore how the overall abundance depends on the mass ejected through wind and dynamical mechanisms and identify those ejecta masses which best reproduce Solar abundances. We report the extent to which our parameter inference results depend on our assumed composition for the dynamical and wind ejecta and examine how the new results compare to previous work.