| 1. | It is very significant for ba stars to heavy - element nucleosfynthesis and galactic chemical evolution
钡星对于重元素核合成及星系化学演化的研究都有非常重要的意义。 |
| 2. | A new model is developed to study the star formation and chemical evolution in globular clusters ( gcs ) in this thesis
本文对银河系球状星团中的恒星形成及化学演化进行了研究。 |
| 3. | The aim of the galaxy chemical evolution research is to reproduce the element abundance patter of stars and gas in the galaxy
银河系化学演化研究的任务，从根本来说，是重现银河系中恒星与气体的元素丰度分布图象。 |
| 4. | According to the conventional hypothesis , the earliest living cells emerged as a result of chemical evolution on our planet billions of years ago in a process called abiogenesis
根据传统的假说，最初的活细胞，肇生于数十亿年前地球上的化学演化过程，这种说法称为无生源说。 |
| 5. | There are several aspects in galactic evolution , such as dynamicas evolution , chemical evolution and thermal evolution , etc . they provide reasonable explaination of the formation and evolution of galaxies in different facets
银河系的形成与演化是天体物理学研究的重大前言课题，银河系演化的研究包括诸多方面，如动力学演化、化学演化、热演化等，分别从不同的角度对银河系的形成和演化过程加以阐释。 |
| 6. | Among the evolution is the chemical evolution of the galaxy showing its exceeding importance . the recognize to the galaxy chemical evolution build up the basement of understanding the whole galaxy evolution . and it can restrict and constrain the evolution and ncleosyhthesis of the stellar
其中银河系的化学演化在其中更是具有极其重要的地位，对银河系化学演化的认识是理解整个银河系演化的基础，并对恒星演化与核合成理论提供约束。 |
| 7. | 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。 |
| 8. | On the bases of the galaxy evolution theory , we use the therotical chemical evolution model of three zone ( such as halo , thick disk and thin isk ) and multi - phase ( diffuse gas , molecular clouds , stars of both low and high mass , the remnants ) . by comparing with the observational constraints , such assurface densities , age - metallicity relation , g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ] , supernovae rates , infall rates . the rationality of the model is verified . based on the theory model , we calculate the abundance of neutron capture element
本文正是在银河系化学演化的基础上，利用银河系的三成分( threezone ) (即晕、厚盘和薄盘)多相( multi - phase ) (气体，分子云，大、小质量恒星以及剩余物质)的化学演化的理论模型，通过与观测约束(质量面密度、场星的年龄-金属丰度关系、太阳附近g矮星金属含量分布函数、三成份的特征量、元素的星系化学演化、超新星的爆炸率、内落速率等)的比较，来检验模型的合理性。 |
| 9. | The average abundance distributions of heavy elements in metal - poor stars can provide fairly direct and detailed information on the nucleosynthesis in every stage after the formation of galaxies . furthermore , it can put more accurate constraints on the chemical evolution of neutron - capture elements . the solution to this problem will have important effect on the solution to a series of problems about nuclear astrophysics and the galactic evolution
贫金属星的中子俘获元素丰度分布能提供星系形成后各个阶段核合成的较为直接和详细的信息，并为星系化学演化的研究提供更为准确的约束，这一问题的解决将对核天体物理及星系化学演化的一系列问题的解决产生重要影响。 |
| 10. | The dissertatation consists of two sections . the first one mainly intrduce the chemical evolution model and observational constrain , and the second mainly intrduce the ncleosyhthesis of r - process and the chemical evolution of ba peak elements the formation and evolution of the galaxy has long been a basic and important branch and one of the most active frontiers in the fields of astrophysics
本文分二部分，第一部分重点介绍星系的化学演化模型和观测约束，第二部分重点介绍r - process核合成和ba峰元素r - process的星系化学演化。 |
