On the Theoretical Period-Luminosity Relation of Cepheids
Astrophysics
2009-10-30 v1
Abstract
The theoretical period-luminosity relation for Cepheids was deduced from stellar evolution and pulsation computations. Questions concerning the metallicity dependence of the relation as well as the constancy of the pulsation `constant' Q in the instablility strip were addressed. We found no significant metallicity dependence of either the slope or of the zero-point of the period-luminosity relation. The Q-value, however, varies across the instability strip, in effective temperature as well as in luminosity; its metallicity dependence, on the other hand, is marginal.
Keywords
Cite
@article{arxiv.astro-ph/9801242,
title = {On the Theoretical Period-Luminosity Relation of Cepheids},
author = {H. Saio and A. Gautschy},
journal= {arXiv preprint arXiv:astro-ph/9801242},
year = {2009}
}
Comments
11 pages, 3 figures, to appear in ApJ May 1, 1998 issue, Vol 498