NEW OPACITIES AND 1ST OVERTONE MODE CEPHEIDS

Authors
ANTONELLO E
Citation
E. Antonello, NEW OPACITIES AND 1ST OVERTONE MODE CEPHEIDS, Astrophysics and space science, 210(1-2), 1993, pp. 331-332
Citations number
9
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astrophysics and space science → ACNP
ISSN journal
0004640X
Volume
210
Issue
1-2
Year of publication
1993
Pages
331 - 332
Database
ISI
SICI code
0004-640X(1993)210:1-2<331:NOA1OM>2.0.ZU;2-L
Abstract
Some results of linear adiabatic and nonlinear pulsation models of fir st overtone mode Cepheids are discussed. New and augmented opacities a nd a nonstandard mass-luminosity relation have been taken into account . The models indicate the possible importance of the resonance P1/P4 = 2 near P1 = 3 days. The resonance could explain the observed characte ristics of the light curve shape of first overtone mode Cepheids.