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Table A.1.
Mean metallicity from the RR Lyrae MDF
| Gal name | ⟨[Fe/H]⟩ | σ[Fe/H] | N⋆ | references |
|---|---|---|---|---|
| [dex] | [dex] | |||
| MW | −1.45 | 0.40 | 115828 | this work |
| LMC | −1.63 | 0.34 | 12239 | Cusano et al. (2021) |
| SMC | −1.86 | 0.33 | 2203 | Muraveva et al. 2018 |
| Sgr dSph | −1.62 | 0.31 | 3950 | Ramos et al. (2022) |
| Sculptor | −1.83 | 0.24 | 297 | Martínez-Vázquez et al. (2015) |
| Draco | −2.05 | 0.34 | 112 | Muraveva et al. (2020) |
| Ursa Minor | −2.00 | 0.25 | 64 | Garofalo et al. (2025) |
| Sextans | −2.03 | 0.36 | 13 | Vivas et al. (2019) |
| Carina | −2.19 | 0.40 | 6 | Dall’Ora et al. (2003) |
| Bootes I | −2.13 | 0.16 | 5 | Dall’Ora et al. (2006), Siegel (2006), Vivas et al. (2020) |
| Ursa Major I | −2.17 | 0.27 | 5 | Garofalo et al. (2013) |
| Ursa Major II | −2.08 | 0.26 | 3 | Dall’Ora et al. (2012), Vivas et al. (2016, Vivas et al. (2020) |
| Bootes III | −2.02 | 0.01 | 3 | Sesar et al. (2014), Vivas et al. (2020) |
| Hydrus I | −2.35 | 0.07 | 2 | Vivas et al. (2020) |
| Coma Berenices | −2.28 | 0.02 | 2 | Musella et al. (2009), Vivas et al. (2020) |
Notes. Weighted means. The typical uncertainties on individual metallicity in the Muraveva et al. (2025) is ≳0.4 dex. The Sgr dSph sample includes both stars in the main body and in the tidal tails of the galaxy.
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