The evolution of neutral gas in damped Lyman $\alpha$ systems from the XQ-100 survey

R. Sánchez-Ramírez, S. L. Ellison, J. X. Prochaska +10

We present a sample of 38 intervening Damped Lyman $\alpha$ (DLA) systems identified towards 100 $z>3.5$ quasars, observed during the XQ-100 survey. The XQ-100 DLA sample is combined wi…