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Figure 1: Image of the detector ( top) when looking at the prominence in the spectral range of the H-Ly continuum head. North is at the top of the image. The white vertical segments at the left bottom corner of the image mark the sections of the pixels selected along the slit for the prominence datasets A_1 ( top) and A_2 ( bottom). The spectrum obtained after averaging over the pixels of A_1 is plotted at the bottom of the figure. The vertical dashed lines delimit the bare and KBr parts of the detector. |
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Figure 2: H-Lyman series close to the continuum head for prominence A_2. The dotted lines represent the single Gaussian fitting. The dashed line results from summing the single Gaussian and the background. |
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Figure 3: Peak intensity as function of position along the slit, for the O I 973.234 Å (solid), Fe III 979.032 Å (dashed), and the unknown line (identified in the text as the O I 979.272 Å, thick solid). |
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Figure 4: Spectral atlas of the QS (black), A_1 (green) and A_2 (purple) parts of the prominence. The top panel shows both the left part of the bare detector (in here lies the O II 796.661 Å, the first line of the atlas) and the full KBr part. The other panels only show the KBr detector. Note that there is a wavelength overlap from one panel to the following one. Also note that the left and right parts of each panel are affected by the calibration procedure over about 0.5 Å. |
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Figure 5: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 6: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 7: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 8: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 9: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 10: QS and prominence spectra as they appear on the KBr section of the detector. |
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Figure 11:
The first two panels show the QS and prominence spectra as they appear on the KBr part of the detector. The last two panels also include part of the bare detector (starting at 1205 Å for the first panel and finishing at 1225.5 Å in the second one) to show the H-Lyman(![]() |
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Figure 12: QS and prominence spectra as they appear on the KBr section of the detector. |
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