Result of the PAHFIT decomposition of the combined (SL+LL) IRS spectrum of the whole IRAS16399−0937 system. The data points are represented by filled circles, with uncertainties plotted as vertical error bars that are smaller than the symbol sizes. The best fit model is represented by the blue line. The dotted black line indicates the mixed extinction components, while solid green and orange lines represent total and individual thermal dust continuum components, respectively. The violet lines represent the ionic and hydrogen molecules, while the magenta lines represent PAH features.