Line profiles at different offsets (′′) relative to Her 36 are shown in different colors at five positions mentioned in the upper left plot. For the detailed positions, see Sect. 3.5. Upper panels: J = 6 → 5 ¹²CO and J = 1 → 0 ¹³CO spectra; lower panels: ³P₁ → ³P₀ and ² P_3∕2 → ²P_1∕2transitions of [C I] and [C II]. All spectra were extracted from their original beam sizes as mentioned in Table 1.