Study of the effect of metallicity on the amplitudes of Cepheids

Abstract

Results concerning the dependence of photometric and radial velocity amplitudes on metallicity are presented based on about 200 Galactic classical Cepheids pulsating in the fundamental mode. The Galactic distribution of the [Fe/H] value of Cepheids is also studied. We show that the photometric amplitude ratio $A_{\mathrm{I}}/A_{\mathrm{V}}$ is independent of metallicity. The observed dependence of this ratio on the pulsation period does not correspond to the theoretical predictions.

arXiv commentAccepted for publication in Astronomische Nachrichten (Astronomical Notes). 4 pages, 5 figures

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Cited by in corpus (4)

• Observational studies of Cepheid amplitudes. II Metallicity dependence of pulsation amplitudes
• Metallicity estimation of MW, SMC and LMC classical Cepheids from the shape of the $V$- and $I$-band light curves
• Precise Fourier parameters of Cepheid Radial Velocity Curves
• Reconstruction of Cepheid Radial Velocity Curves from the shape of the V-band Light Curves