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arXiv · 2510.13070

Galactic chemical evolution with the short-lived isotopes Mn-53, Fe-60, Hf-182, and Pu-244

Benjamin Wehmeyer·Andrés Yagüe López·Benoit Côté·Maria K. Pető·Chiaki Kobayashi·Maria Lugaro
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Abstract

We run a three-dimensional Galactic chemical evolution (GCE) model to follow the propagation of Mn-53 from supernovae of type Ia (SNIa), Fe-60 from core-collapse supernovae (CCSNe), Hf-182 from intermediate mass stars (IMSs), and Pu-244 from neutron star mergers (NSMs) in the Galaxy. We compare the GCE of these short-lived radioactive isotopes (SLRs) to recent detections on the deep-sea floor. We find that although these SLRs originate from different sites, they often arrive conjointly on Earth.

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Benjamin Wehmeyer, Andrés Yagüe López, Benoit Côté, Maria K. Pető, Chiaki Kobayashi, Maria Lugaro. 2025-10-15. Galactic chemical evolution with the short-lived isotopes Mn-53, Fe-60, Hf-182, and Pu-244. https://doi.org/10.1051/epjconf%2F202429701016

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