标题： 银河系恒星群体 显示英文标题

标题： Galactic Stellar Populations

摘要： 银河系的形成和演化历史可以从长寿命恒星的空间分布、运动学特性、年龄以及化学丰度分布中找到。 从这一化石记录中，原则上可以提取不同组分的恒星形成历史、它们的化学演化、恒星初始质量函数、并合历史——什么与什么时候并合了？——并与理论模型进行比较。 观测正在推动模型的发展，我们正处在一个令人兴奋的时代。 显示英文摘要

摘要： The history of the formation and evolution of the Milky Way Galaxy is found in the spatial distribution, kinematics, age and chemical abundance distributions of long-lived stars. From this fossil record one can in principle extract the star formation histories of different components, their chemical evolution, the stellar Initial Mass Function, the merging history -- what merged and when did it merge? -- and compare with theoretical models. Observations are driving models, and we live in exciting times.