Fig.9
Partitioning of the Gould Belt region based on thresholds over free-free emission (red), CO emission (blue), and total emission at 30 GHz (yellow), used as tracers of Hii gas, molecular gas, and diffuse ISM environments, respectively, and the rest of the Gould Belt region (white). Circled regions are those selected for computing the spectra and have been labelled Hii-gas (Barnard’s arc) and diffuse ISM (centred on l = 190°, b = −35°) regions, respectively.
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