Fig. 3
Extinction from H − Ks color excess versus extinction from Ks − [3.6] color excess. By adjusting Ks − [3.6] to obtain a one-to-one regression line (solid line) we find A [3.6] /AKs = 0.611. The white iso-density contour delineates the region used to compute de regression line. The dashed line is the regression line for AV > 20 mag, it indicates the deviation at large extinction. Case A and B refer to Table 2.
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