Selection of SPIRE-FTS integrated line intensity maps. The map center coordinates are those of Sgr B2(M) core: RA, Dec = 17^h 47^m 20.5^s, −28° 23′ 06′′. Black stars mark the location of the three massive star-forming cores Sgr B2(N, M, and S). Black triangles mark other H II regions (Mehringer et al. 1992, 1993; Meng et al. 2019). The black dashed circle of radius 2.5′ (~5.0 pc), centered at RA, Dec = 17^h 47^m 39.7^s, −28° 25′ 48′′ marks a specific X-ray irradiated region (Zhang et al. 2015). The pink dashed circles in panel a show Shells 1, 2, and 3 of Tsuboi et al. (2015). White circles show positions A, B, C, and D.