Fig. 1

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Integrated intensity maps (in color scale) of CH3OH-E 2−1,2−1−1,1, c-C3H2 З2,2−31,3, and HNCO 40,4−30,з (from left to right) observed by the IRAM 30 m telescope, showing the different locations of the molecular peaks (Table 2, Spezzano et al. 2017). The contour levels (in orange) show 3.2 × 1021, 4.3 × 1021, 5.9 × 1021, 8.1 × 1021, 1.1 × 1022, 1.5 × 1022, and 2.1 × 1022 cm−2 of the molecular hydrogen column density () map (Spezzano et al. 2016). The markers in blue represent the dust peak (diamond), molecular emission peaks of CH3OH (three-branched triangle), HNCO (upward pointing triangle), and c-C3Η2 (plus sign).
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