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Fig. 1


Overview of the giant molecular filament GMF38a. Top panel: 13CO (GRS, Jackson et al. 2006) integrated intensity contours in the range vLSR = 50−60 km s−1 overlaid on integrated H I emission in the same velocity range. The black ellipses show the “off-positions” whose spectra are shown in Fig. 5 and the black “×” signs mark positions whose spectra are show in Fig. 6. Bottom panel: same 13CO integrated intensity contours overlaid on 1.4 GHz continuum emission from the THOR survey (Wang et al. 2018). The contours in the top panel indicate integrated 13CO emission levels of 5, 10, 20, and 30 K km s−1. The contours in the bottom panel indicate integrated 13CO emission levels of 5 K km s−1 for reference. The dashed box in the top panel outlines the region that is discussed in the following sections and shown in Figs. 7, 9, 11, 14, and 19.

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