English: The position of the ultra metal-rich star HD 108063 on plots of (top) B-V - absolute magnitude, and (bottom) mass - absolute magnitude for main sequence stars using data from here. The B-V is too high for the absolute magnitude of a main sequence star and would indicate that the star is a subgiant, but the mass is fully consistent with an F0V star. This illustrates the effect that a high metallicity has on the observed stellar temperature; an increased metallicity decreases temperature of the stellar surface, which increases the observed B-V.
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