Fig. 17
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Line profiles and TVS of B205. The upper panel shows the Balmer, Paschen, Bracket, and helium lines in several spectra of B205 taken in 2019. The lower panel shows the TVS of these spectra, indicating a significant velocity range between −150 km s−1 and 220 km s−1. The variations in the spectra appear to be strongest in the helium lines. The emission around the rest wavelength of the features is of nebular origin, as confirmed by their 2D spectra.
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