ИСТИНА

Published photoelectric and CCD photometric data for fundamental-mode Cepheids in the Large Magellanic Cloud are analyzed. The inferred scatter of the observed period-luminosity relation decreases with increasing quality of the light curves used. The observed scatter of the period-luminosity relations in the V and IC bands is as low as 0.11m and 0.07m, respectively, i.e., a factor of ∼ 1.5 smaller than the lowest published estimates. This, in particular, suggests that the intrinsic scatter might be lower than previously believed.