Fig. C.1

Sample STELLA/SES spectrum of HSS 348. Shown are five selected spectral features used for determining the component’s radial velocities; from top to bottom, the O i triplet, Hα, Si ii 6372 Å, Si ii 5041 Å, and Hβ. The two lines are synthetic spectra of the two component stars. Both spectra are shifted in wavelength to fit the observed spectrum.
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