银河系系统发生学
Galactic Phylogenetics
摘要：
系统发生学是进化生物学中广泛使用的概念。它是通过构建代表分支模式和序列的树来重建进化历史。这些树代表着共享的历史，我们的意图是将这种方法应用于银河系历史的分析。在银河系考古学中，共享环境是恒星形成的星际介质，并为作为方法论工具的树构建提供了基础。使用太阳型恒星的元素丰度作为DNA的替代，我们在Jofre等人2017年建立了这样一个进化树来研究太阳邻域的化学演化。在本文中，我们总结了这些结果并讨论了未来的前景。
英文摘要：
Phylogenetics is a widely used concept in evolutionary biology. It is the reconstruction of evolutionary history by building trees that represent branching patterns and sequences. These trees represent shared history, and it is our intention for this approach to be employed in the analysis of Galactic history. In Galactic archaeology the shared environment is the interstellar medium in which stars form and provides the basis for tree-building as a methodological tool. Using elemental abundances of solar-type stars as a proxy for DNA, we built in Jofre et al 2017 such an evolutionary tree to study the chemical evolution of the solar neighbourhood. In this proceeding we summarise these results and discuss future prospects.
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