Image Details
Caption: Figure 3.
SOFIA/HAWC+ 214 μm Stokes I image of DR21 in grayscale and contours with overlaid analysis masks (colored boundaries) used to separate the Main Ridge from the system of subfilaments. Thin colored lines indicate the spines of the Main Ridge and subfilaments, as derived from the Herschel-based column density map. The red ellipse marks the outflow region near DR21 Main, excluded from this study. A magenta cross marks the approximate location of the dense core N56. A dashed blue line shows the location of the subfilament 1S-X.
© 2026. The Author(s). Published by the American Astronomical Society.