WISE W4 map of 25′ × 25′ fields, centered on Kronberger 1 (panel a), Berkeley 69 (panel b), Berkeley 71 (panel c), King 8 (panel d), and Berkeley 19 (panel e). The polarization segments are the same as in Fig. 1 for member stars (in red), and field stars (in black) are superimposed on the respective WISE map. The color scale in the maps represents the WISE W4 intensity (in DN), and the contours correspond to its constant value.