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Fig. A.1

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Spectral irradiance associated with SEDs used in this work. The functions are cut at the ionisation threshold, shown here at 7.5 eV for Cso- Left panel: Spectral irradiance at the surface of a 20,000 K blackbody. Right panel: Spectral irradiance of the χ = 1ISRF from Mathis et al. (1983).
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