All known Be-rich stars associate with Thamnos-2, with Be/Li excess ratios and Si correlations indicating a rare hypernova-driven spallation enrichment event ~13 Gyr ago.
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Beryllium enhancement in stars of the accreted Thamnos-2 system
All known Be-rich stars associate with Thamnos-2, with Be/Li excess ratios and Si correlations indicating a rare hypernova-driven spallation enrichment event ~13 Gyr ago.