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Fig. 10


Three-dimensional motions of the methanol (upper panel) and water (lower panel) masers in G24.78+0.08 A1N. In both panels, the gray-scale image and black contours (10–90%, at step of 10% of the image peak of 11 mJy beam−1) reproduce the VLA A-Array 7 mm continuum. Colored triangles and squares report the absolute positions (evaluated at the date 2003 September 4) of the 22 GHz water and 6.7 GHz methanol masers, respectively, with colors denoting VLSR as coded in the wedge on the right of the plot. In the upper panel, the 3D velocities of the methanol masers are shown with cones, with opening angle representing the uncertainty in the direction of motion and base ellipticity proportional to the ratio of the velocity components on the plane of the sky and along the line of sight. The white cone in the left bottom corner of the panel gives the scale for the velocity amplitude. In the lower panel, the sky-plane velocities of the water masers are indicated with arrows. The white arrow at the right bottom shows the velocity scale.

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