Event Details

One of the most compelling questions in current extragalactic astronomy is how galaxies in the early universe formed and evolved into those that we see today. To approach this problem, we need to construct a robust observational baseline for the star formation, mass assembly and chemical evolution history of galaxies. In this talk, I will summarize our near-infrared (NIR) spectroscopic surveys of galaxies at intermediate and high redshifts using cutting-edge instruments. I will demonstrate how we interpret the physical properties of galaxies from these surveys with the addition of semi-analytical and cosmological hydrodynamic simulations. By combining the global properties of galaxies from magnitude-limited surveys and the spatially resolved properties from gravitationally lensed galaxies, we have obtained crucial insights into the basic problems of galaxy formation and evolution such as the origin of the metallicity gradient, the formation of the spiral arms and the role of the large-scale clustering environment.