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Fig. 1

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Overview of G35.20-0.74 N imaged by Spitzer, APEX, JVLA, and ALMA at various scales. First row-left: Spitzer 4.6 μm emission (Benjamin et al. 2003) obtained by IRAC overlaid with a green contour map of the 870 μm continuum emission from the ATLASGAL survey (Csengeri et al. 2014). The unit of the color wedge is MJy sr−1 in IRAC map. The APEX 870 μm contours start from 3σ, and are then 6σ, 12σ, and 24 σ, where σ =90 mJy beam−1. The dashed yellow and red circles are of 1' and 2' in diameter, with the latter being the VLA primary beam. First row-right: Same Spitzer 4.6 μm emission overlaid with green contours showing the integrated intensity map of NH3 (1,1) and black contours showing 1.2 cm continuum emission from our observations. The green contours start from 5 σ, and are then 10σ, 15σ, and 20 σ, where 1σ is equal to 1.2 mJy beam−1. The black contours start from 6σ, and are then 20σ, 48σ, 80σ, 130σ, 180σ, and 230 σ, where 1σ is equal to 18 μJy beam−1. Blue arrows show the direction of the CO outflow (Birks et al. 2006). Second row: Same VLA 1.2 cm continuum in color scale overlaid with ALMA 870 μm continuum emission in green contours. The color bar is in units of mJy beam−1. Green contours are from 9 to 230 mJy beam−1 with a step of 1.8 mJy beam−1. Cores A-F are marked following Sánchez-Monge et al. (2014).

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