Our model introduces the general equations of chemical evolution used in galaxies to studies of gcs . in this model the important gas outflow caused by the supernova explosion and other processes during the formation of globular clusters is included . based on such a self - enrichment model , monte carlo method is used to simulate the formation and chemical evolution of globular cluster systems , from which a new explanation of the bimodal metallicity distribution can be given 本文把星系演化中通用的化学演化方程引入到球状星团这一系统中来，特别考虑到球状星团中恒星形成过程中超新星爆发等因素引发的气体外流，把这一重要的物理过程包含到化学演化方程中，并用蒙特卡罗方法来模拟球状星团系统的自增丰演化。
Nature of the universe - chapter seventeen if the remnant of a supernova explosion is heavier than two or three solar masses , the neutron degenerate pressure is not strong enough to support the star . there does not exist stronger force up to our knowledge and we believe the remnant will collapse to a black hole 在超新星爆发后，如果恒星剩馀质量超过二或三个太阳质量，中子简并压力亦不足以抵抗向内的引力，这时在已知的物理理论里面，再没有更强的力能足以与引力一决雌雄，恒星只可以不断塌缩，成为黑洞。
If the mass of the core after a supernova explosion is more than 1 . 4 but less than about 3 solar masses , then electron degenerate pressure is not strong enough to support the star . the star will contract to a size even smaller than the white dwarf . the electrons are squeezed into the nuclei and are combined with the protons to form neutrons 假若在超新星爆发后，剩馀核心质量介乎太阳质量的1 . 4至3倍，那么核心中的电子简并压力便再不足以抵抗强大的引力，恒星会进一步收缩，直至电子亦被挤压至原子核内，和质子结合成为中子。
