Top: contour image of the emission integrated under the C³⁴S 2  →  1 line, in the velocity range from 22.4 to 37.9 km s^-1, overlaid on the grey-scale 3.1 mm continuum emission of G11.11P1. First contour and contour spacing are 0.09 Jy beam^-1 km s^-1 (3σ), the dashed contours show the negative emission (− 3σ). The synthesized beam (60  ×  32; PA = 176°) is shown in the lower right corner. Bottom: spectrum of C³⁴S 2  →  1 toward the peak position on the integrated intensity map at RA = 18^h10^m2824, Dec = −19°22′305 (J2000).