矮椭球星系Sculptor中Co的分布研究

A Research of Cobalt Distribution in the Local Dwarf Spheroidal Sculptor

矮椭球星系中铁族元素丰度分布的研究具有重要意义。这不仅能帮助我们更好的理解星系的演化,还有助于研究超新星爆炸。本文通过修正矮椭球星系中的Fe元素演化模型,对Co元素的分布进行研究,其中主要考虑了β衰变对Co元素产量的影响。最后将模拟结果和相应的观测数据做了对比,我们发现模拟结果能较好的解释Sculptor星系中Co的金属丰度分布。

The research of iron-peak elements abundance distribution in dSphs is of great significance because it can help us to better understand the galaxy evolution and supernova（SN） nucleosynthesis. This paper talks about the distribution of Co element by modifying the Fe element evolution model in dSphs and paying more attention to the impact of β decay on Co. After a comparison between the simulated results and the corresponding data obtained,it is found that the simulated result can better describe the metal abundance distribution of Co in the Sculptor.