Cosmic evolution of the H2 mass density and the epoch of molecular gas

T. K. Garratt, K. E. K. Coppin, J. E. Geach +13

We present new empirical constraints on the evolution of ${\rho }_{{\mathrm{H}}_2}$, the cosmological mass density of molecular hydrogen, back to $z\approx 2.5$. We employ a statistical approach…