Open Access

Fig. 1


Galactic plane from l = 18° to l = 56° shown: a) at 8   μm (Benjamin et al. 2003); b) in the 13CO 1–0 line, integrated from −5 to 135   km   s-1 (Jackson et al. 2006). Zoom on l = 22°−32°: c) at 8   μm; d) in 13CO 1–0 ; and e) at 870   μm (Schuller et al. 2009).

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