Stars Group : Galactic Structure
The absolute magnitudes in the K band from the ISB distances of Milky Way, LMC and SMC Cepheids,
all calculated with the revised p-factor law of this paper. The solid line is the best fit to the Milky Way Cepheid data. The
dashed line is the Persson et al. (2004) K-band PL relation for the LMC, for an assumed LMC distance modulus of 18.50.
The slopes of the PL relations for both the LMC and Milky Way derived from the ISB technique agree now very well with
the slope of the observed K-band relation in the LMC. The slight mean offset of the 5 SMC Cepheids from the Galactic
relation has been used by Storm et al. (2004) to constrain the metallicity effect on the zero point of the PL relation.
Direct Distances to Cepheids in the Large Magellanic
Cloud: Evidence for a Universal Slope of the Period-Luminosity Relation up to Solar Abundance
Large Magellanic Cloud.