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Fig. 3

image

Panel a: contour map of the 7 mm continuum emission from Beltrán et al. (2007) overlaid on our grey-scale image of the e-MERLIN map obtained at 5 cm. Contour levels range from 0.93 (=3σ) to 10.23 in steps of 1.55 mJy beam−1, while grey-scale levels range from 156 (=2σ) to 468 in steps of 78 μJy beam−1. The synthesised beams of the two maps (0.′′56 × 0.′′56 for the VLA and 0.′′097 × 0.′′038 with PA = 21° for the e-MERLIN image) are shown in the bottom left and right corners. The white dots denote the positions of the emission peaks at (from NE to SW) 7 mm, 1.3 cm, 3.6 cm, and 5 cm, while the dashed line is the best fit to these peaks. The star symbol indicates the estimated position of the star ionising the H II region (see Sect. 4.3). Panel b: same as upper panel, with a contour map of the 6 cm continuum emission imaged with the VLA. Contour levels range from 0.51 (=3σ) to 10.03 in steps of 1.3 mJy beam−1. The synthesised beam of the VLA image is 0.′′415 × 0.′′38 with PA = –16°.

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