Stellar population models and chemical enrichment in early-type galaxies

星系中恒星的数量保留了数十亿年来星系演化历史的线索。该项目将研究当地宇宙中椭圆、透镜状和螺旋状凸起中的恒星群。其目的是开发新技术来测量这些星系中的化学演化模式，从而获得有关不同类型爆炸恒星的富集来源的信息，以及由此暗示的恒星形成的持续时间。MILES数据库中的恒星光谱将与恒星的理论模型光谱一起用于研究紫外/光学波段的不同部分，以提取恒星种群年龄和化学丰度模式的信息。

Populations of stars in galaxies retain clues to the history of how galaxies evolved, over billions of years. This project will study populations of stars in ellipticals, lenticular and spiral bulges in the local Universe. The aim is to develop new techniques to measure the chemical evolution patterns in those galaxies and so gain information about the sources of enrichment from different types of exploding stars and the duration times of star formation that implies. Stellar spectra form the MILES library together with theoretical model spectra of stars will be used to investigate different parts of UV/optical wavebands for extracting information on stellar population ages and chemical abundance patterns.