Fig. 5
Left: dynamic spectra of the photospheric-subtracted Hα profile for BD+46°442 as a function of orbital phase. Right: original continuum-normalised Hα profile at phase φ = 0.99 (full grey line). The synthetic photospheric model (dashed black line) is overplotted with stellar parameters Teff = 6250 K, log g = 1.5, and [M/H] = −0.5. The lower right panel is the photospheric-subtracted profile.
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