Left: the HC₃N core (gray-scale) and the NH₃ (1,1) core (blue dashed lines, quoted from Myers et al. 1988) overlaid on the JCMT SCUBA 850 μm continuum data from JCMT proposal ID M97AN16 (Hogerheijde & Sandell 2000) (cyan contours, evenly stepped from 0.075 to 0.75 Jy beam⁻¹ in log-scale). The gray and blue triangles denote the peaks of the EMC (P point) and NH₃, respectively. The IRS is also marked on the map (hexagonal star). The blue and red wings of the CO (3− 2) outflow (blue solid and red dotted lines, quoted from Hogerheijde et al. 1998) and the medium infalling lobe (red solid line, quoted from Yen et al. 2014) were also overlaid on the figure. Middle: as in left panel except cyan contours representing Herschel SPIRE 500 μm continuum map, from 1.5 Jy beam⁻¹ to 5 Jy beam⁻¹ stepped by 0.3 Jy beam⁻¹. Right: as in left panel except cyan contours representing Herschel SPIRE 250 μm continuum contours, from 1.5 to 5 Jy beam⁻¹ stepped by 0.3 Jy beam⁻¹. Fluxes around the IRS are centrally peaked but higher level contours are not shown.