Computed attenuation factors for X-ray and NIR emission and variable line-of-sight absorption, as parameterized by the hydrogen column density NH (bottom axis) and its equivalent extinction AV (top axis). X-ray attenuation of the observed ACIS-I flux is computed for three single-temperature emitting plasmas (short-dashed: 1 keV; mid-dashed: 1.5 keV; long-dashed: 2 keV), and three energy ranges, as labeled. Optical and NIR attenuation is shown (using the Aλ/AV conversions from Rieke & Lebosfky 1985) with the black solid lines.
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