论文标题
通过Actinide生产来表征$ r $ $ - 过程
Characterizing $r$-Process Sites through Actinide Production
论文作者
论文摘要
恒星的元素丰度模式的变化通过$ r $ - 过程元素增强，相对actactinide to-lanthanide比率的变化是最重要的。我们研究了这些actinide差异的来源，以确定这些变化是由于天体物理位点的自然差异引起的，还是由于$ r $ process位点访问的不确定的核性质。我们发现，由于$ r $ process事件的中性射出程度，相对恒星actelar actelar actelar actelar rucdanide的差异很可能是天体物理的。此外，如果一个$ r $ - 过程能够在其弹出材料的中子富度中产生变化，则只需要一种类型的$ r $ - 程序网站来解释所有观察到的相对actinide增强的级别。
Of the variations in the elemental abundance patterns of stars enhanced with $r$-process elements, the variation in the relative actinide-to-lanthanide ratio is among the most significant. We investigate the source of these actinide differences in order to determine whether these variations are due to natural differences in astrophysical sites, or due to the uncertain nuclear properties that are accessed in $r$-process sites. We find that variations between relative stellar actinide abundances is most likely astrophysical in nature, owing to how neutron-rich the ejecta from an $r$-process event may be. Furthermore, if an $r$-process site is capable of generating variations in the neutron-richness of its ejected material, then only one type of $r$-process site is needed to explain all levels of observed relative actinide enhancements.
