Constrain metallicity-dependent Type Ia supernova yields

Determine how metallicity-dependent Type Ia supernova yields can be observationally constrained and how those yields affect galactic chemical-evolution models.

Background

The review explains that the initial metallicity of a Type Ia supernova progenitor changes its neutron excess through the production of 22^{22}Ne, thereby modifying isotopic and elemental yields. Although systematic calculations have quantified these trends, the observational signatures of the metallicity dependence and its consequences for galactic chemical evolution remain unresolved.

References

It remains unclear how these metallicity-dependent yields can be observationally constrained and how they can affect GCE models.

— Supernova nucleosynthesis: a review  (2609.16584 - Zha et al., 15 Sep 2026) in Section 4.2, “Metallicity dependence”