Open Access
Fig. 1
continued. For H2CCO and HCO the contour levels start from 6-σ rms in steps of 4-σ rms with 3-σ rms levels of 0.02 K km s−1 for both species. For CH3CHO, C2H, C4H, and C4H2 the contour levels start from 9-σ rms in steps of 6-σ rms with 3-σ rms values of 0.01, 0.07, 0.03, and 0.004 K km s−1, respectively.
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