论文标题
球状簇的形成是过冷的情况
The Formation of Globular Clusters as a Case of Overcooling
论文作者
论文摘要
在最近的观察发现的驱动下,我们选择了大量的互动二进制物作为在现有候选者中最适合生产典型的银河球状球状簇种群的化学模式。尽管如此,为了避免超新星污染,我们进一步驱动了以下观点:高于临界质量恒星的观念未能产生超新星事件,而是最终陷入了黑洞,而不会弹出大量的能量和重金属。这个假设具有抑制5至1000万年的恒星形成反馈的诱人意义,实际上导致恒星形成失控,类似于{\ it过冷}的类似物,而没有反馈会使大多数重男性变成早期宇宙的恒星。在这样的条件下,恒星形成的多个发作,结合了以前发作的二进制恒星喷射,似乎是不可避免的,因此占球状簇中多重种群现象的无处不在。
Driven by recent observational findings, we select massive interactive binaries as the most suitable among the existing candidates for producing the chemical patterns typical of multiple populations of Galactic globular clusters. Still, to avoid supernova contamination we are further driven to endorse the notion that above a critical mass stars fail to produce supernova events, but rather eventually sink into black holes without ejecting much energy and heavy metals. This assumption has the attractive implication of suppressing star formation feedback for some 5--10 million years, in practice leading to runaway star formation, analog to {\it overcooling} that in absence of feedback would have turned most baryons into stars in the early Universe. Under such conditions, multiple episodes of stars formation, incorporating binary star ejecta from previous episodes, appear to be unavoidable, thus accounting for the ubiquity of the multiple population phenomenon in globular clusters.