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Fig. 1
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STIS spectra of EC 11481–2303 (top, red line, flux ×1.04, for clarity), Feige 110 (middle, green), and PG0909+276 (bottom, blue). All spectra were convolved with a Gaussian (FWHM = 2 Å). The straight lines are estimates for the respective continuum-flux level.
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