We present results from the theoretical modelling of the observed B,V light curves of 14 RR Lyrae stars in the Large Magellanic Cloud .
The sample includes 7 fundamental and 7 first overtone pulsators covering the metallicity range from - 2.12 to - 0.79 dex in [ Fe/H ] , with average value of - 1.54 dex .
Masses , intrinsic luminosities , effective temperatures , and reddenings were derived by fitting high accuracy multiband light curves available for these RR Lyrae stars to nonlinear convective pulsation models .
Individual distance moduli were determined for each variable , they lead to an average distance modulus for the Large Magellanic Cloud of \mu _ { 0 } = 18.54 \pm 0.02 ( \sigma = 0.09 mag , standard deviation of the average ) , in good agreement with the “ long ” astronomical distance scale .