本项目拟利用我国主导的BATC、SCUSS、BASS多色测光数据，并结合国际上释放的X-ray卫星观测数据（如Chandra、XMM-Newton）以及光学/红外测光和光谱数据（如SDSS 、WISE、CANDELS、DEEP2、eBOSS、DESI等），研究不同红移、不同富度的星系团其成员星系的恒星形成历史。我们将研究各类成员星系（包括红星系、蓝星系、绿谷星系、AGN寄主星系等）的恒星形成性质（如恒星质量、金属丰度、恒星形成率等），探索其分布特征及其随红移、局域密度、星系团质量、星系团动力学之间的关系。同时，对各类星系在不同红移、不同密度环境中的占比、结构参数和恒星形成率开展统计研究。本项目有助于我们理解星系团的高密度环境对星系演化过程中与恒星形成和AGN活动相关的各种物理过程的影响。

In this proposal, we plan to take use of the multi-color photometric data obtained by ourselves (such as the BATC, SCUSS, and BASS), the X-ray data from the Chandra and XMM-Newton satellites, and the released optical/infrared photometric and spectroscopic data (such as the SDSS, WISE, CANDELS, DEEP2, eBOSS, and DESI), to investigate the star formation histories of the galaxies in clusters at different redshifts and in a wide range of richness. The star formation properties (such as stellar masses, chemical abundance, star formation rates) of various categories of galaxies (including the red quiescent galaxies, blue galaxies, and green-valley galaxies, AGN host galaxies) will be derived. The distributions of above physical parameters and the variations with redshift, local density, cluster mass, cluster dynamics will be addressed. Meanwhile, statistical studies on the fractions will be done for different categories of galaxies, as well as on the distributions of structure parameters and star formation rates. This project could help us understand the influence by cluster environment on various physical processes concerning star formation and AGN activities during evolution of galaxies.