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Fig. 4


Maps of the integrated intensity (contours) and velocity field (color maps in the bottom panels) of a) CH3OH (22,1–31,2), b) CH3OH (147,8–156,9), c) 13CH3OH (121,11–120,12), and d) CH3OH vt = 1 (71,6–61,5) towards cores A and B. For the different panels, the starting (and increasing contour levels in terms of σ, in Jy beam-1 km s-1) are 5σ (5σ, with σ = 0.18), 5σ (10σ, with σ = 0.11), 5σ (5σ, with σ = 0.25), and 5σ (10σ, with σ = 0.19) for core A; and 5σ (5σ, with σ = 0.11), 5σ (5σ, with σ = 0.06), 3σ (3σ, with σ = 0.14), and 5σ (5σ, with σ = 0.11) for core B. Offsets are measured with respect to the phase center (see Sect. 2). The red crosses indicate the position of the dust emission peaks of cores A and B (see Table 2). The synthesized beam and spatial scale are shown in the bottom-right corner (upper panels). The energy of the upper level of each transition is indicated in the bottom-right corner (lower panels). The dashed line is intended to stress that the velocity intervals used to compute the moment maps are different for cores A and B.

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