Fig. 3.
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Luminosity-metallicity relation for a reference sample of dwarf galaxies from the MATLAS survey (Heesters et al. 2023; Müller et al. 2025), the ultra-diffuse galaxy NGC 1052-DF2 (Fensch et al. 2019), the Cen A dwarfs (Müller et al. 2021b), and the M 83 dwarf galaxies observed here. The line and intervals indicate the fit by Kirby et al. (2013) for the Local Group dwarfs and the 1, 2, and 3σ intervals.
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