Image Details
Caption: Figure 3.
The spectra and spots of all the maser transitions detected in the W51d2 subregion. The maser emissions are shown with colorful lines in the spectra of the H2O and NH3 (9,6) transitions, and marked with gray bars in the spectra of the NH3 (7,5) and (6,3) transitions. The gray contours in maps of maser spots show the 1.3 mm continuum, of which the start, step, and end levels are the same as that in Figure 2.
© 2024. The Author(s). Published by the American Astronomical Society.