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Fig. 6

image

Flux reduction in the high velocity wing of the three strongest H2 progressions. Several lines of the respective progressions have been co-added (to avoid uncertainties in the wavelength calibration, the lines have been shifted to a common zero velocity before co-addition). The shaded area indicates the difference between the two epochs. The mean difference scaled to fit the individual results is shown as the green, dashed curve. An approximate LSF is also shown.

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