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Fig. 4

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a) Spitzer-IRAC 8 μm emission map (gray scale) superimposed on 13CO J = 1−0 (blue contours) and C18O J = 1 − 0 (green contours) intensity maps. The integrated velocity range is from 2028 km s-1. b) Integrated velocity range is from 1924 km s-1. c) Integrated velocity range is from 2427 km s-1. d) C18O J = 1 − 0 (green contours) intensity map overlayed on 12CO J = 1−0 integrated intensity map (color scale). The integrated velocity range is from 1924 km s-1. The contour levels of each CO molecule are 30, 40, ..., 90% of the peak value. Letters A, B, C, and D indicate the different molecular clumps. The dot symbols mark the mapping points. The pink triangle represents the IRAS 19282+1814 source. The red and green crosses represent the submillimeter sources and exciting star HD 231616, respectively. The gray and color bar is in unit of MJy sr-1 and K km s-1, respectively.

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