alpha-element nucleosynthesis

In a low-research day, Hans-Walter Rix and I discussed the possible relationships between the alpha-element abundance ratios I have been looking at and current best-in-class models of nucleosynthesis and enrichment. Jan Rybizki (MPIA) has such models and has simulated the alpha-element abundance evolution in a wide range of scenarios. The situation is complex—the models aren't well described by just two types of fixed supernova yields of course—but it also looks like there are variations in the data that aren't captured by the models. So hopefully there are simple things to conclude here.

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