Comparison of the reddening traced by the gas and the stars. In the plot on the top, data points are colored according to five different bins in surface brightness with units of f(Hα) 10⁻²⁰ erg s⁻¹ cm⁻² spaxel⁻¹, corresponding with the black contours earlier used in the paper. The black dashed line indicates a one-to-one relation, the brown dash-dotted line is the relation E(B − V)_Stellar = 0.5 × E(B − V)_Gas, and the purple dotted line is the relation E(B − V)_Stellar = 0.25 × E(B − V)_Gas. The bottom map shows the ratio of E(B − V)_Stellar/E(B − V)_Gas in each tile. The locations of the AGNs are marked with white crosses (Komossa et al. 2003).