GOT C+ [C ii] (l-V) map compared with the Molinari et al. (2011) orbital model and with the four open stream orbital model of Kruijssen et al. (2015). Left panels: (l-b) and (l-V) maps in which the dotted line indicates the Molinari et al. (2011) orbital model (reproduced from Fig. 2 in Kruijssen et al. 2015). The grey-scale in the top panel is the integrated intensity of NH₃(1, 1) emission that traces the dense gas. The symbols with error bars represent the phase-space information extracted by Kruijssen et al. (2015) from NH₃(1, 1). The small open black circle denotes Sgr A^∗. (The circle in the left panel is in the original figure and indicates a feature in position-velocity space discussed by Kruijssen et al. 2015.) Right panels: (l-b) and (l-V) maps in which the solid open arcs indicate the four open gas streams and the legend labels them by color (reproduced from Fig. 4 in Kruijssen et al. 2015). The GOT C+ OTF scan at b = 0° passes through streams 2 and 4, and passes closest to stream 3 near l ~ 0.̊2 and to stream 4 near l ~ 0.̊05. In the bottom panel the GOT C+ [C ii] longitudinal-velocity contour plots are overlayed on the l-V plots of the four stream open orbit model from Kruijssen et al. (2015).