Fig. 11
Near- and mid-infrared extinction derived for carbonaceous grains, using the size distributions of Mathis et al. (1977), shown in red; Kim et al. (1994), shown in green; and Weingartner & Draine (2001), shown in blue. The vertical axis shows the mass extinction coefficient on the left and the optical depth on the right, where a value of 3.8 × 10-4 g cm-2 has been used for the column density of the carbonaceous material (see Sect. 5.3).
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