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Fig. 7


Left panel: IRAC 8.0 μm vs. NVSS 1.4 GHz integrated fluxes for 83 PNs. Right panel: MIPS 24 μm vs. NVSS 1.4 GHz integrated fluxes for 48 PNs. The dotted line is a linear fit to the data. The fitting parameters are shown on the upper left corner of the figures. The open diamonds, filled triangles and circles are from the GLIMPSE 3D (Zhang et al. 2012), GLIMPSE II (Zhang & Kwok 2009), and GLIMPSE I (Kwok et al. 2008) survey, respectively. The asterisks denote our newly discovered PNs.

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