Spitzer image at 8 µm (color scale) overlaid on the NH₃ (1,1) integrated intensity (green contours) from Busquet et al. (2013). The contour levels range from 3 to 27 in steps of 6, and from 27 to 67 in steps of 20 times the RMS noise of the map, 9 mJybeam⁻¹ km s⁻¹. The NH₃ (1,1) synthesized beam is shown in the bottom left corner. The black star depicts the position of IRAS 18153–1651. Blue crosses and cyan four-point stars depict radio sources detected in this study only at 6 cm and 3.6 cm, respectively. Pink three-point stars indicate radio sources detected at both frequency bands. The black and yellow dashed circles represent the field of view at 6 cm (~7′ at 6 GHz) and 3.6 cm (~4.2′ at 10 GHz), respectively. The two observed fields in this work, G14.2-N and G14.2-S are labeled. The gray rectangles indicate the close-up images presented in Figs. 2 and 3.