Distributions of 1σ SB limits of Si II* λ1533 and apparent UV magnitudes for our sample. The left panel shows 1σ SB limits on a 1-arcsec² scale for the Si II* λ1533 NBs, while the right panel shows 1σ SB limits multiplied by (1+z)⁴/(1+z₁₁₄₁)⁴ to account for the effect of cosmic dimming in a relative manner. The color bar indicates the integration time. The stacked subsample is enclosed by gray squares, and the individually detected Si II* halos are indicated by red crosses (see Sect. 3.2 ). The MUSE IDs for the seven objects with m_UV ≲ 25.5, which are brighter than the faintest individually detected halo (ID=51) are shown in the left panel. Detection rates of halos are expected to depend on the SB limits of the data set, but the panels do not show any clear trend, likely due to the limited sample size and different sample properties.