金属丰度和对流超射对恒星演化影响的初步探讨

The approach with star evolution of 5M_⊙ influence by metal abundant and over shoot

文章采用了pd90程序模拟了5 M⊙的恒星,在主序和主序后的演化情况。并且根据其程序给出的计算结果,绘出了5 M⊙恒星的赫罗图。选择金属丰度和对流超射的不问参数,形成六条赫罗图线。在赫罗图中,对5 M⊙的恒星其金属丰度和对流超射对恒星演化的影响进行讨论。从赫罗图中的lgL/L⊙和lgTeff,与演化时间序列图,可以直观的得出金属丰度和对流超射变化对恒星演化的影响。

This article used the program which be named of pd90 to simulate 5M⊙＇star evolution in the main sequence and the over main sequence. By this program＇s results we computed and drew up the H--R map. And chosen the different value of metal abundant and over shoot it came out six H--R lines. In the H--R map we analyzed these lines of 5M⊙ in metal abundant and over shoot changed. In the H--R map,we could directly perceive the evolution change through lg L/L⊙ and lg Teff between 4 the program time---step.