New G-band relation [Fe/H] = -6.93 - 6.04P + 1.65 φ31 calibrated on 72 RR Lyrae stars with spectroscopic anchors, yielding 0.00 dex bias and 0.26 dex RMS scatter.
Metallicities from high-resolution spectra of 49 RR Lyrae variables.MNRAS2021,503, 4719–4733, [arXiv:astro- ph.SR/2103.11012]
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Photometric metallicity of Galactic RR Lyrae stars in the Gaia DR3 era
New G-band relation [Fe/H] = -6.93 - 6.04P + 1.65 φ31 calibrated on 72 RR Lyrae stars with spectroscopic anchors, yielding 0.00 dex bias and 0.26 dex RMS scatter.