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Fig. 7

image

Gas-ice maps of the SVS 4 cluster. Ice abundances are shown as black circles. The contours at 3σ, 6σ, 9σ, etc. represent the gas-phase integrated intensities. a: CO abundances on gas 13CO 2–1; b: CO abundances on gas C18O 2–1; c: CH3 OH abundances on gas CH3OH 50−40 A+. d: H2O abundances on gas CH3OH 50−40 A+. The white crosses mark the position of the SVS 4 sources, and the white star represents SMM 4.

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