Period-Luminosity Relation for Classical Cepheids. Estimating the Intrinsic Scatter
Authors: Berdnikov L.N.; Dambis A.K.; Vozyakova O.V.
Source: Astrophysics and Space Science, Volume 252, Numbers 1-2, 1997 , pp. 473-476(4)
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 0m.11 and 0m.07, 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.
Document Type: Regular paper
Publication date: 1997-01-01