Effects of metal abundances on the evolutionary period changes of classical Cepheids

Details Effects of metal abundances on the evolutionary period changes of classical Cepheids Effects of metal abundances on the evolutionary period changes of classical Cepheids

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.162...47s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 162, no. 1, Dec. 1989, p. 47-56.

Statistics

Computation

9

Abundance, Cepheid Variables, Metallicity, Stellar Evolution, Computational Astrophysics, Stellar Composition, Stellar Orbits

Scientific paper

Theoretical values of the evolutionary period changes of classical Cepheids are calculated as functions of not only periods but also chemical abundances. It is found that the theoretical values of period changes marginally depend on metal abundances. Comparison with observed period changes of galactic Cepheids shows reasonable agreement. Small-amplitude Cepheids are discussed combined with their evolutionary states.

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