Title：Satellite Galaxies as Windows into Structure Formation

speaker：Qi Guo

Abs: Galaxy groups and clusters are the largest gravitationally bound structures in the Universe and play a crucial role in both cosmology and galaxy formation studies. In particular, their satellite galaxies serve as effective tracers of the underlying dark matter distribution, while their kinematics reveal the dynamical state of the host systems—closely tied to the evolutionary stage of the universe. By combining observational data with numerical simulations, we investigate the spatial distribution and dynamics of satellite galaxies, as well as their connections with central galaxies, host dark matter halos, and the surrounding large-scale structure. These studies offer important insights into the formation of large-scale structure in the universe and the physical processes driving galaxy formation.

CV：Prof. Qi Guo is a research fellow at the National Astronomical Observatory of China and deputy director of the Key Laboratory of Computational Astrophysics at the Chinese Academy of Sciences. She received her Ph.D. from the University of Munich in 2009 and conducted postdoctoral research at Durham University. In 2013, she joined the National Astronomical Observatory of the Chinese Academy of Sciences. Her research focuses on galaxy cosmology, and she has made a series of high-profile contributions in both theoretical and observational aspects. She was awarded the Chinese Academy of Sciences Young Scientist Award in 2020 , and the National Science Fund for Distinguished Young Scholars in 2024.