PERIOD-LUMINOSITY RELATION FOR CLASSICAL CEPHEIDS - ESTIMATING THE INTRINSIC SCATTER

Citation
Ln. Berdnikov et al., PERIOD-LUMINOSITY RELATION FOR CLASSICAL CEPHEIDS - ESTIMATING THE INTRINSIC SCATTER, Astrophysics and space science, 252(1-2), 1997, pp. 473-477
Citations number
14
ISSN journal
0004640X
Volume
252
Issue
1-2
Year of publication
1997
Pages
473 - 477
Database
ISI
SICI code
0004-640X(1997)252:1-2<473:PRFCC->2.0.ZU;2-K
Abstract
Published photoelectric and CCD photometric data for fundamental-mode Cepheids in the Large Magellanic Cloud are analyzed. The inferred scat ter of the observed period-luminosity relation decreases with increasi ng quality of the light curves used. The observed scatter of the perio d-luminosity relations in the V and I-C bands is as low as 0(m).11 and 0(m).07, respectively, i.e., a factor of similar to 1.5 smaller than the lowest published estimates. This, in particular, suggests that the intrinsic scatter might be lower than previously believed.