Dust temperature map of CB 130 (color scale), overlaid with contours of the hydrogen column density (white: 10²¹ and 10²² cm^-2, black: 0.5, 2 – masked by yellow N_out contour – 4, 6, 8, and 20 × 10²¹ cm^-2). Yellow contours mark N_out (Eq. (3)) and N_1′ (Eq. (10)). The yellow circle marks the position of the protostellar core CB 130-SMM1 with the embedded Class 0 VeLLO. The yellow square marks the position of the secondary starless core CB 130-SMM2. The asterisk marks the position of the Class I-II YSO CB 130-IRS, which most likely associated with CB 130, but not embedded in its dense core (see Launhardt et al. 2010).