(a) C¹⁸O integrated intensity map using combined 7 m+12 m array data. Red, green, and blue contours show emission integrated from −23 to −21, −21 to 19, and −19 to −17 km s⁻¹, respectively. The contours start from 4σ in steps of 2σ, with σ = 0.1 Jy beam⁻¹ km s⁻¹. The gray-scale image is the 1.″0 resolution 7 m+12 m array combined 1.3 mm continuum image. (b) Same as panel (a) but for ﹩{{\rm{N}}}_{2}{{\rm{D}}}^{+}﹩(3–2). The contours start from 4σ in steps of 2σ, with σ = 0.025 Jy beam⁻¹ km s⁻¹. (c) Same as panel (a) but for ﹩{\mathrm{DCO}}^{+}﹩(3–2). The contours start from 4σ in steps of 2σ, with σ = 0.03 Jy beam⁻¹ km s⁻¹. (d) Same as panel (a) but for ﹩\mathrm{DCN}﹩(3–2). The contours start from 4σ in steps of 2σ, with σ = 0.03 Jy beam⁻¹ km s⁻¹.