H₂ 2−1/1−0 S(1) ratio in SGMC 4/5. The left panel shows the spectra for the two near-IR H₂ lines, H₂ 1−0 S(1) in solid-black and H₂ 2−1 S(1) in solid-red line scaled by a factor of 3.4. The dashed-red line is the Gaussian fit for the H₂ 2−1 S(1) line, while the blue-solid line is the fit for the H₂ 1−0 S(1) emission that corresponds to the addition of two Gaussian curves (the red and black dashed lines). The color image and white contours in the right panel show the integrated intensity of the high-velocity component observed in CO(3−2). Red and black contours are the H₂ emission integrated in 1300–1512 km s^-1 (low-velocity component) and 1580–1760 km s^-1 (high-velocity component), respectively. Offset positions are as in Fig. 4.