Synthesis of Heavy Elements in the Ejecta of Neutron Star Mergers

Abstract

We present a nucleosynthesis study on the neutrino-driven wind after neutron star merger. Post-processing tracers from a hydrodynamical simulation, we determine nucleosynthesis yields that depend on both life time of the massive neutron star and polar angle. In comparison with the dynamic ejecta we find a complementary nucleosynthesis, which can explain the r-process pattern beyond the first r-process peak. Additionally, we predict possible forms of light curves for the detection of a kilonova.