The metallicity sensitivity of a surface brightness temperature scale
Publications of the Astronomical Society of the Pacific | Published : 2019
To obtain the accuracy now sought in the extragalactic distance scale through standard candles and rulers, the calibration of stellar photometry must be improved. The sensitivity of the V − K color surface brightness relation is examined here by means of model atmosphere fluxes. It has previously been neglected, but is shown here to be a significant term in the error budget of a recent high-precision distance of the Large Magellanic Cloud, an anchor in galaxy distances based on Cepheids.