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This article has an erratum: [https://doi.org/10.1051/0004-6361/201935684e]


Fig. A.16.

image

Zoom-in of the main emission features observed in the optical spectra of BAT99 107, showing an averaged X-SHOOTER observation (blue line) at phase ϕ = 0.05 (maximum Doppler separation), compared to our composite binary PoWR fit (red line). The narrow emission lines in the left panel probe the inner wind velocity field, while Hα shown in the right panel probes the outer velocity field.

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