Monday

Observations showed that the baryonic matters (galaxies) are mostly distributed in the web-like structures at large scale. Dark matter simulations have also shown such distributions. Understanding the link between baryonic matter and dark matter at large scale can help us to understand the cosmology as well as galaxy evolution. Using a set of cosmological simulations (410 Mpc/h) with various baryon models, we classified the large-scale environments into knots, filaments, sheets and voids with two classification methods: Vweb (based on the shear tensor, Hoffman et al. 2012) and Pweb (based on the tidal tensor, Hahn et al. 2007). In this talk, I will present our recent studies (Cui et al. 2018, 2019) on the connection between baryons and dark matter, as well as their evolutions.