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Fig. 13.

image

Average COS spectrum of the Lyα+N V region from observations in 2016 December (black histogram). The solid red line tracing the data is the total emission model. The solid blue line tracing the data is the emission model modified by components that model the broad absorption. The key in the figure identifies the emission components in our model. Geocoronal emission in the center of the Milky Way Lyα absorption trough is indicated with an Earth symbol. The velocity scale along the top axis is for Lyαλ1215.67, relative to the host galaxy systemic redshift, z = 0.00973 (Theureau et al. 1998).

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