IRAM data. ¹²CO, ¹³CO, CS, and SO , integrated between 1.5 and 3.9 km s⁻¹ (avoiding the line wings caused by outflow). From left to right: contours low(step)max: 3(1)11 K km s⁻¹ (¹²CO); 1(0.5)4.5 K km s⁻¹ (¹³CO); 0.15(0.15)1.05 K km s⁻¹ (CS); and 0.15(0.15)0.80 K km s⁻¹ (SO). The white dot indicates the location of the 850 μm peak. The white crosses in the leftmost panel indicate the positions where CH₃ OH was observed. All offsets are relative to the 2MASS YSO position (see Table 1).