Fig. 1.
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Baryonic Tully–Fisher relation for high-quality SPARC galaxies (grey circles), low-quality SPARC galaxies (red circles), and UDGs (from Mancera Piña et al. 2020; blue squares). Low-quality SPARC data and UDGs systematically scatter to the left of the BTFR, mostly due to inclination uncertainties in face-on disks. UDGs do not appear as a separate population when compared to LSB dwarfs with similarly low inclinations and data quality.
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