Figure 2.
![Overlay map of the brightness temperature $T_{\rm B}$ (scaled by the bars in K) at ${v_{\rm LSR}}= 35$ (in blue), 49 (green), and 75 km s−1 (red) (color only online). Rectangles are positions of H ii regions detected in the 110$\alpha$ recombination line (Mehringer et al. 1992, 1993). The cluster at $l\sim 0^{\circ }.67$ toward the red molecular clump is the Sgr-B2 H ii region, and that at $l\sim 0^{\circ }.51$ is Sgr-B1. [Bottom] Same, but at ${v_{\rm LSR}}=+35$ (left: as blue in the top panel) and 65 km s−1 (right: as red). The contours are 1.3 GHz continuum surface brightness by meerkat (Heywood et al. 2022; Yusef-Zadeh et al. 2022). Rectangles are the same as the top panel.](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/mnras/532/4/10.1093_mnras_stae1724/1/stae1724fig2.jpeg?Expires=1748900294&Signature=N8R6UypdckzhwVd3qJB89S3k9jj-Ssni3D5qy9Yk--ubFXJv1Oewez4~-K9EM6lam3H8BQjUb-NnCLc3OhxWkSErw0OH527HSKojObndooGazS6qTsIcd2-GO~0HJCxk5U-j~vaJvqBWBKuYAuumLkoD7gEEB58h~F-nSKc9Ls3h0PzUgbCYRSDgsDs7XaUmGKHttghvowIuF~nS9K4WWGmy2~dhbARRSdrpQ4SLqcijSXjt~snT0d8D-HgQ8RnYnmZUlSw7ISPfgosM4nMKo1l0s1j5ttE40iAlhwAbeR7Ro98aiDOlwePMH8L-gpyKniYSJ0BY9oXKQMQ6-3LDrA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Overlay map of the brightness temperature |$T_{\rm B}$| (scaled by the bars in K) at |${v_{\rm LSR}}= 35$| (in blue), 49 (green), and 75 km s−1 (red) (color only online). Rectangles are positions of H ii regions detected in the 110|$\alpha$| recombination line (Mehringer et al. 1992, 1993). The cluster at |$l\sim 0^{\circ }.67$| toward the red molecular clump is the Sgr-B2 H ii region, and that at |$l\sim 0^{\circ }.51$| is Sgr-B1. [Bottom] Same, but at |${v_{\rm LSR}}=+35$| (left: as blue in the top panel) and 65 km s−1 (right: as red). The contours are 1.3 GHz continuum surface brightness by meerkat (Heywood et al. 2022; Yusef-Zadeh et al. 2022). Rectangles are the same as the top panel.
