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Fig. A.1
12CO 3–2 spectral map of IRAS 4A and 4B over the 240″ × 240″ mapping area. Individual spectra are shown on the TMB scale from –2 K to 16 K and velocity scale from –20 km s-1 to 30 km s-1. The maps are centered on IRAS 4A. The contour levels start from 20σ (10 K km s-1) with an increasing step size of 5 K km s-1.
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