Fig. 6
H2 column density map derived from 13CO, reproduced from the data of Russeil et al. (2003). Contours start from 1.0 × 1020 cm-2 and grow by 5.0 × 1020 cm-2 up till 6.1 × 1021 cm-2 . The positions of the four targets are marked. The starless core, target B-4, remains invisible in the data.
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