Fig. 16.
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Scatter plot of NH and L2 − 10 keV for 11 sources (excluding the Spiderweb and the two Compton-thick candidates). Red circles correspond to measured NH values, while green triangles to 1σ upper limits. The green box shows the parameter space still consistent with star formation at the level of 1000 M⊙ yr−1 or 100 M⊙ yr−1 (vertical dashed line).
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