Integrated intensity of HC3N J = 37–36 emission is shown: (ν = 0) (grayscale), ν7 = 1 (blue contours), ν6 = 1 (red contours), and ν7 = 2 (green contours). The green contours are 0.05, 0.069, 0.088, 0.106, and 0.125 Jy/beam km s-1. Blue contours are 0.2, 0.422, 0.644, 0.866, and 1.088 Jy/beam km s-1. Red contours are 0.043, 0.067, 0.092, 0.117, and 0.141 Jy/beam km s-1. Sources B1, B2, and B3 are indicated with colored boxes as in Fig. 1.
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