The chemical DNA of the Magellanic Clouds IV. Unveiling extreme element production: the Eu abundance in the Small Magellanic Cloud⋆
AZ
Shared by Adam Zar on Oct 31, 2025 • 10:50 AM UTC
NobleBlocks IDNB7857345A
Abstract
In this study we investigate the chemical enrichment of the rapid neutron-capture process in the Small Magellanic Cloud (SMC). We measure [Eu/Fe] abundance ratios in 209 giant stars that are confirmed members of the SMC, providing the first extensive dataset of Eu abundances in this galaxy across it...
Highlights
-The Eu abundance in the SMC is enhanced at all metallicities, with a clear decline as [Fe/H] increases, indicating the impact of the onset of Type Ia supernovae on Eu enrichment.
-[Eu/Mg] remains elevated by about +0.5 dex across the entire [Fe/H] range, showing a larger r-process contribution relative to α-capture elements than in the Milky Way.
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