近邻星系位于星系的宇宙学演化时标最末阶段。研究近邻星系的意义不仅在于诊断星系当前的属性和状态，也是为了对星系形成和演化的历史进行考古发掘，而近邻星系中的HII区和星族则是蕴涵星系化学和动力学演化信息的“化石”。本项目将利用中国科学院国家天文台兴隆2.16米望远镜和兴隆60/90厘米望远镜的观测数据，结合其它地面、空间望远镜的多波段数据，研究近邻星系中的HII区和星族性质，旨在获得金属丰度、恒星形成率、星族年龄等参数在星系中的空间分布趋势，调查星系中正在发生恒星形成事件以及既往的恒星形成历史，并由此推断星系个体的成长过程。在本项目中，通过光谱与图像的多波段组合研究，我们将尝试最大程度地解开星族年龄、金属丰度、尘埃消光在星系光谱能量分布中的耦合效应；借助近邻星系空间分辨程度高的优势，我们将洞察星系中HII区的内部特征，并对核球、盘、棒等结构进行分离研究，探索它们各自的形成机制。

Nearby galaxies reside in the last phase of galactic evolution across cosmic time. Research on nearby galaxies means not only to diagnose present properties and status of the galaxies but also to archaeologically explore historical formation and evolution of the galaxies, in which HII regions and stellar populations, behaving like fossils, contain information about chemical and dynamical evolution of the galaxies. This proposal is designed to study HII regions and stellar populations in nearby galaxies by utilizing data obtained with the 2.16 m telescope and the 60/90 cm Schmidt telescope mounted at the XingLong station of the National Astronomical Observatories of China, Chinese Academy of Sciences, in combination with multi-wavelength data obtained with other ground-based and space telescopes, aimed at acquiring spatial distributions of metallicity, star formation rate, and stellar population age, inspecting current star formation events and past star formation history, and thereby deducing growth processes of the individual galaxies. In this project, via the multi-wavelength combination of spectroscopic and imaging data, we will attempt to solve the degeneracy of stellar population age, metallicity, and dust attenuation in spectral energy distributions of galaxies; by taking advantage of intrinsically high spatial resolution for nearby galaxy, we are able to probe internal properties of individual HII regions in the galaxies, and decomposite bulges, disks, and bars in the galaxies for discovering formation mechanism of the various substructures of galaxies.