Where the Forest Goes Dark: Halo-centered Characterization of High Column Density Systems with IllustrisTNG

Victor R. Soares da Silva, Daniel López-Cano, L. Raul Abramo +2

High column density systems of neutral hydrogen (HCDs) --- Lyman limit systems (LLSs), sub-damped and damped Ly$\alpha$ absorbers (DLAs) --- contaminate both the 3D and the 1D statistic…