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Fig. 8

image

Filaments in Sgr B2(N) colored by their mean velocity gradient as derived for the molecular species CH3OCHO, CH3OCH3, CH3OH and 13CH3OH. The velocity gradient ranges from −50 km s−1 pc−1 (blue), corresponding to filaments located in front, to +50 km s−1 pc−1 (red), corresponding to filaments located in the back. The gray contours indicating 242 GHz continuum emission at a level of 1.2 Jy beam−1. The white circles represent the dense cores, and the black dashed line shows the filament F02, only visible in H2 CS.

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