Fig. 1
From: Measuring the ionisation fraction in a jet from a massive protostar
G35.2-0.74N star formation complex. a Three colour composite HST image of the innermost region of the star-forming site G35.20-0.74N, revealing the jet from the massive protostar. Red channel is the [Fe II] 1.644 μm narrow filter (F164N), green channel is the H 1.600 μm wide filter (F160W), and blue channel is the J 1.100 μm wide filter (F110W). b Composition of the HST/WFC3 (violet) image, VLT/ISAAC (white contours), ALMA (cyan), and VLA (green) datasets. In both panels, north is up and east is left. The position of the main cores in the region as well as the jet knots are labelled. The field of view of panel b is indicated with a rectangle in panel a
