# Cosmic metal density evolution in neutral gas: insights from observations and cosmological simulations

Robert M. Yates, Celine Peroux, Dylan Nelson

Research output: Contribution to journalArticlepeer-review

We contrast the latest observations of the cosmic metal density in neutral gas ($\rho_{\rm met,neu}$) with three cosmological galaxy evolution simulations: L-GALAXIES 2020, TNG100, and EAGLE. We find that the fraction of total metals that are in neutral gas is \$