Lack of Correlation Between CIV BAL and AlIII BAL/mini-BAL: Insights into BAL Saturation and Ionization State

On the other hand, the absence of such correlation does not necessarily indicate that the changes in these BALs are not caused by ionizing continuum variability, but rather can be attributed to the effects of BAL saturation, variable shielding gas, and the ionization state of the outflow to some extent. In particular, the saturation effect is evident from the large scatter in the data points in our graph.