Chemical Evolution of Galaxies
Chemical Evolution of Galaxies
复制标题
星系的化学演化
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
B. Tinsley
中科院分区：
文献类型：
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作者：
J. Audouze;B. Tinsley
前面的章节已经描述了解释不同核素形成所需的各种核合成过程以及这些核合成事件的位置。在本专着的开头，简要回顾了构成行星、恒星和星系等天体的物质的演化。在这场持续约 1010 年的演化过程中，核合成改变了元素丰度的分布。本章讨论这些丰度随时间的演变。研究这种时间依赖性演化应考虑的基本天文物体是银河系：每个星系不仅由发生核合成并提供银河能量主要来源的恒星组成，而且还由星际气体组成，星际气体被核合成过程的输出污染，并从中形成连续几代的恒星。
The various nucleosynthetic processes needed to account for the formation of the different nuclear species have been described in the previous chapters as well as the location of these nucleosynthetic events. At the beginning of this monograph, the evolution of the matter which constitutes the celestial bodies such as planets, stars and galaxies was briefly recalled. During this evolution, which lasted about 1010 yr, the nucleosynthesis has modified the distribution of the element abundances. This chapter deals with the evolution with time of these abundances. The basic astronomical object which should be considered for the study of such time dependent evolution is the Galaxy: each galaxy is not only made of stars in which nucleosynthesis takes place and which provide the main source of galactic energy but also of interstellar gas which is contaminated by the output of the nucleosynthetic processes and from which successive generations of stars are formed.