论文标题
球状簇与卷云之间的进化连接
Evolutionary link between globular clusters and circumgalactic clouds
论文作者
论文摘要
美国建立的可能性将圆形云（CGC）视为形成球状簇（GC）的父云的残余物（Acharova＆Sharina 2018）基于以下事实的比较。首先，红移$ z <1 $以及我们和其他星系中的GC的CGC的金属性显示出双峰分布，最低$ \ rm [mg/h] = -1 $。 $ \ rm [mg/h] <-1 $和$ \ rm [mg/h]> -1 $在云中测量云中元素丰度的典型错误中，GCS和CGC中MG丰度的平均值和标准偏差。 Second, a similar coincidence is observed for GCs and CGCs with $\rm [X/H]<-1$ and $\rm [X/H]> -1$ at redshifts $ 2 <z <3 $, where $[X/H]$ is the metallicity determined from the sum of several elemental abundances (Dias et al. 2016, Rafelski et al. 2012, Wotta et al. 2019, Quiret等。第三，从红移$ \ rm z \ le 2.5 $（即大约11 Gyrs）开始观察到高金属性CGC。同时，积极形成球状簇，它们的超新星能够富集周围的气体，从中形成了云的高金属成分。
The established by us possibility to consider circumgalactic clouds (CGCs) as the remnants of the parent clouds in which globular clusters (GCs) have been formed (Acharova & Sharina 2018) is based on a comparison of the following facts. First, the metallicities of CGCs at redshifts $ z <1 $ and of GCs in our and other galaxies show a bimodal distribution with a minimum near $\rm [Mg/H]=-1$. Mean values and standard deviations of the Mg abundances in GCs and CGCs with $\rm [Mg/H]<-1$ and $\rm [Mg/H]> -1$ coincide within the typical error of measuring the elemental abundances in clouds: 0.3 dex (Acharova & Sharina 2018). Second, a similar coincidence is observed for GCs and CGCs with $\rm [X/H]<-1$ and $\rm [X/H]> -1$ at redshifts $ 2 <z <3 $, where $[X/H]$ is the metallicity determined from the sum of several elemental abundances (Dias et al. 2016, Rafelski et al. 2012, Wotta et al. 2019, Quiret et al. 2016). Third, high-metallicity CGCs are observed starting from redshifts $\rm z\le 2.5$, i.e. approximately 11 Gyrs ago. At the same time globular clusters were actively formed, and their supernovae were able to enrich the surrounding gas, from which the high-metal component of the clouds was formed.
