Fig. 4
Measured ratios of the H-like Lyα line to the sum of the He-like resonance, intercombination, and forbidden lines from the Chandra spectrum of EX Hya (black diamonds with error bars). The histograms show the results from the models discussed in Sects. 4.2 to 4.5. For the empirically-derived EMD, the error bars indicate the 90% confidence level (Sect. 4.6).
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