Radio continuum emission associated with bubble N107. The bubble is denoted by the grey dashed circle in the centre. Overlaid are four elliptical apertures (A, B, C, D) used to measure the radio fluxes. The grey dashed ellipse in the upper right (labelled BG) is the region used for measuring the background. Left: emission at 1420 MHz/21 cm from the VGPS survey. Right: emission at 327 MHz/92 cm from the WSRT survey. We note blurring in the direction of declination (top-left-to-bottom-right), caused by the larger beam size (lower resolution) in the declination direction.
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