Fig. 6.

Hertzsprung–Russell diagram of G Gaia vs. BP–RP, comparing the observed stars with isochrones of metallicity [M/H] = −1.5, for three ages (1, 6, and 12 Gyr). The colour-coding for the stars defines the metallicity of the isochrone used to derive the stellar parameters. The blue symbols correspond to the stars that used isochrones of [M/H] = −1.5, as in the plot.
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