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A typical 3-sigma fit to the C IV line at 1550 Å. The line at 1533 Å is the Si II* resonance line. The light grey histogram line is the modeldata. The black line is the best fit model. The red line shows the underlying scattered stellar continuum. The blue line shows the best fit that could be made by assuming a C IV 1550Å intensity of zero. Detection significance is determined by comparing the χ2 of the fits with and without the line. |
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