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arXiv · 2508.07705

The role of rotation on the yields of the two {\gamma}-ray emitters 26Al and 60Fe ejected by massive stars

Agnese Falla·Lorenzo Roberti·Marco Limongi·Alessandro Chieffi
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Abstract

We show that the observed 60Fe/26Al flux ratio provided by the SPectrometer on INTEGRAL satellite (0.24 +- 0.04) can be reproduced only if rotation is taken into account in the computation of the stellar models. Predictions from non-rotating stellar models yield to a significantly lower ratio (0.062), which is incompatible with the observed value. The adopted models and the associated yields are based on a combination of models already published by Limongi & Chieffi (2018) complemented by additional ones fully consistent with the original grid, allowing a finer resolution in the initial rotational velocity distribution.

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Agnese Falla, Lorenzo Roberti, Marco Limongi, Alessandro Chieffi. 2025-08-11. The role of rotation on the yields of the two {\gamma}-ray emitters 26Al and 60Fe ejected by massive stars. https://doi.org/10.3847/1538-4357%2Fadfa05.

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