Cumulative radial distribution of the sources in the central parsec of W3 Main. The location of the center is chosen to be the position of IRS5. Left: the solid line shows the cumulative distribution of the X-ray sources of Feigelson & Townsley (2008) and the dotted line shows the distribution of the K_s-only catalog. Right: the solid line shows the distribution of the X-ray sources without K_s counterpart and the dotted line shows the cumulative distribution of the K_s-band sources matched with the X-ray catalog. The dashed line in both figures is the radial extinction profile derived from radially averaging the extinction map derived in Fig. 7.