Effects of [Fe/H] on the properties of Galactic classical Cepheids

Details Effects of [Fe/H] on the properties of Galactic classical Cepheids Effects of [Fe/H] on the properties of Galactic classical Cepheids

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jphcs.218a2025k&link_type=abstract

Journal of Physics: Conference Series, Volume 218, Issue 1, pp. 012025 (2010).

Physics

Scientific paper

Correlations have been searched for between the atmospheric [Fe/H] value and the observed amplitudes of classical Cepheids. Model calculations show that fundamental mode pulsation is unstable for solar like chemical composition between 8 and 10 days, but observations contradict the models. The ratio of the radial velocity and photometric amplitudes, AVRAD/AB, shows a mild metallicity dependence.

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