Extended Data Fig. 3: Variation in metal absorption line strengths of the two DLA systems.
From: Resolving the H i in damped Lyman α systems that power star formation
a–e, Metal absorption line strength variations of different ions across the arc for the z ≈ 2.5 DLA (blue squares) and the z ≈ 2.05 DLA (red circles), respectively. The physical separations are in the source-plane of the absorbers and centred on the centre of the background arc. The filled symbols are detections, and the open symbols are 2σ limits of non-detections. Error bars correspond to the ±1σ uncertainty measurement of absorption strengths. In all cases, the z ≈ 2.5 DLA exhibits much weaker metal absorption lines as compared to the z ≈ 2.05 DLA.
