银河系Ⅰa型超新星所占星系恒星数目比例

The supernova Ia ratio in milky way galaxy

利用银河系三成分(晕、厚盘和薄盘)星系化学演化模型,在比较了计算结果和可观测量的基础上,得出:Ⅰa型超新星数目约占恒星总数目的0.03。

Use the chemical evolution model of three-zone（the halo thick disk and thin disk）,on the basis of compared the theoretical calculation and the observational constrains, it is shown that the number of type I a supernova is 3 percent of the whole milk-way galaxiy stellars.