Fig. 8
Shape of the Brγ line. Top to bottom, left to right: apertures 9 (M4), 18 (M5), 31 (M6), 4, 13 and 28. The null velocity is chosen as the centre of the Gaussian fit of the line, and the continuum derived in the fit is subtracted. The crosses show the actual profile values for the positive velocities, which are also plotted for the negative velocities to show the asymmetry of the profile.
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