论文标题
通过分析球状簇和圆形云的化学成分来调查迅速的IA祖细胞性质
Investigation of the Prompt SNe Ia progenitor nature through the analysis of the chemical composition of globular clusters and circumgalactic clouds
论文作者
论文摘要
提出了一种方法来确定来自短寿命前体的IA型超新星的性质 - 及时的SNIA。该方法基于这样的假设：这种IA型超新星的亚型爆炸成低金属性球状簇（GCS），并负责用铁峰元素富集GCS和边缘云云（CGC）的高金属亚组。我们证明CGC是两个子组的GC的组。该方法的准确性首先取决于GC的数量，GC的数量已详细研究。其次，关于化学元素的数量，其丰度已经解决。对于这种方法，仅这些元素是在超新星爆炸中产生的，并且不是在恒星进化的前阶段产生的。我们对低金属性超新星GC中核合成的估计值与以下及时的SNIA模型非常吻合：白色矮人（WDS）的单个退化纯deflagration模型（WDS）在1.30 msun中燃烧的质量（WDS）在1.30 msun范围内从1.31 msun到1.31 msun，如果碳在wd中与10^3 gd的中心（0.5*g. 5*g.5*g.5*g.5*^9 g） g/cm^3。
A method is proposed for determining the properties of type Ia supernovae from short-lived precursors -- Prompt SNIa. This method is based on the assumption that this subtype of type Ia supernovae exploded into low-metallicity globular clusters (GCs), and is responsible for the enrichment of the high-metallicity subgroup of GCs and circumgalactic clouds (CGCs) with the iron peak elements. We justify that CGCs are the formation places of GCs of both subgroups. The accuracy of the method depends, first, on the number of GCs, the spectra of which have been studied in detail; second, on the number of chemical elements, the abundances of which have been worked out. Only those elements are of interest for this method that are produced in supernova explosions and are not produced at the previous stage of the stellar evolution. Our estimates of nucleosynthesis in low-metallicity supernova GCs are in the best agreement with the following Prompt SNIa model: Single Degenerate Pure Deflagration Models of white dwarfs (WDs) burning with masses in the range from 1.30 Msun to 1.31 Msun if carbon explodes in the centre of a WD with a low central density from 0.5*10^9 g/cm^3 to 10^9 g/cm^3.
