First ${}^{94}$Nb($n,\gamma$) Measurement: Constraining the Nucleosynthetic Origin of ${}^{94}$Mo in Presolar Grains

J. Balibrea-Correa, J. Lerendegui-Marco, C. Domingo-Pardo +136

Isotopic measurements of presolar silicon carbide grains from dying stars have revealed a puzzling overabundance of ${}^{94}$Mo that stellar nucleosynthesis models have failed to rep…