Fig. A.2.
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Integrated intensity of 15NH3 (1,1) in L1544, masked following S/N < 3. The contours show the integrated intensity of the NH3 (1,1) line. The levels start at 2 K km s−1 and increase with a step of 3 K km s−1. The average noise level of the map is 6 K km s−1. The beam size and scale bar are shown in the bottom left and right corners, respectively.
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