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Fig. 9

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Line-profile changes in the UV region a) and in the blue b) in of HR 7903, as revealed by the five spectra for those respective wavelength regions listed in Table 2. In a) the second and third spectra were separated by a gap of 2 nights, while in b) the second, third and fourth spectra were taken on successive nights; all the other intervals represented here were substantially longer.

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