元素星系化学演化的分析解

Calactic Chemical Evolution of Primary Metal Elements:an Analytical Model

利用瞬时循环近似 ,考虑元素产率随金属丰度的变化 ,得出了主要金属元素星系化学演化的分析解 .结合恒星核合成结果 ,计算了银河系中 O元素、Mg元素、Na元素、Sc元素等的丰度随金属丰度的变化规律 。

We model the galactic chemical evolution of primary metal element by using the instantaneous recycling approximation and the yield metal dependent which enable the problem to be handled analytically.Based on the results of nucleosynthesis,the abundances of oxygen,magnesium,natrium and scandium with [Fe/H] are calculated and compared with the observations.