Zoomed-in view of the NE and SW cores showing the NH ₃ (1,1) integrated intensity in color scale with VLA 3.6 cm continuum contours (0.1, 0.3, 2, and 7 mJy beam ⁻¹) from Cyganowski et al. (2011) superposed in blue; the three brightest centimeter continuum sources are labeled CM1, CM2, and CM3. (a) SMA 1.3 mm continuum is shown in white contours (levels: 7, 30, and 90 mJy beam ⁻¹) and the synthesized beams of the EVLA (yellow), VLA (blue), and SMA (white) are shown in the lower left corner. (b) White contours show the integrated intensity of NH ₃ (2,2) (levels: 25, 50, 75, and 117 mJy beam ⁻¹ km s ⁻¹). (c) Contours show the integrated intensity of NH ₃ (3,3) (white; 30, 60, and 120 mJy beam ⁻¹ km s ⁻¹) and (6,6) (cyan; 13, 17, and 22 mJy beam ⁻¹ km s ⁻¹). In all panels, the locations of two new 25 GHz CH ₃OH masers are cyan triangles, and 6.7 and 44 GHz CH ₃OH masers from Figure 1 are also shown.