Moment 1 (panel a) and moment 2 (panel b) maps of SO (5₆ – 4₅) toward Oph IRS 63. In panel a, the directions of the red and blue outflows (Flores et al. 2023) are indicated by the arrows in the corresponding colors. In panel b, the original moment 2 map has been multiplied by a factor of $\sqrt{8\mathrm{\hspace{0.17em}ln}\left(2\right)}$ and should be interpreted as the line width. The black ellipse and curves denote the SO rings and spiral structures (Fig. 1).