Fig. A.1

Variation in the A2 fraction with source X-ray
luminosity in CDFS (solid line with hatched uncertainty region) and COSMOS (solid
line with shaded uncertainty region). The ratio is A2/(A1 + A2),
where A1 and A2 are the
numbers of type-1 and type-2 sources, respectively. Here, the two samples are
considered individually and at two different redshift ranges (middle and
right columns). The different panels show the effect of different
assumptions while assessing the luminosity and obscuration classes. The
upper two panels show the difference between considering HR or
NH to separate the population into
type-1 (unobscured) and type-2 (obscured) sources. The middle lower panel
shows the effect of adopting the intrinsic luminosity
()
instead of the observed luminosity (
,
upper panels). Finally, the bottom panel shows
the effect of correcting for the NH bias when derived via
flux-ratios (Paper I). A moving bin is used as described in Fig. 1. The horizontal dotted line shows the overall
A2 fraction in each case,
.
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