Distributions of dust temperature (left) and 350 μm optical depth (right). Top: 1D model using opacity curve No. 22 of Ossenkopf & Henning (1994, Table B.1), where β = 1.89. Second from above: 3D model (cf. Fig. 13) accounting for gradients in the core and using a slightly modified curve No. 22 with β = 1.99 (model II.1). The contours correspond to 16, 17, 18, 19, 20, 25, and 30 K. Second from below: same 3D model geometry, but with the opacity curve of Zubko et al. (2004) that includes PAHs and for β = 2.1 (model II.2, see the text). Bottom: model II.3 has the same geometry as before, but uses opacities from Weingartner & Draine (2001) for R_V = 5.5 and PAHs (see Fig. 13).