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The Metallicity dependence of the Cepheid Period-Luminosity relation: methodology and results

Marta Mottini·Martino Romaniello·Francesca Primas·Martin Groenewegen·Giuseppe Bono·Patrick Francois
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Abstract

We present the results of an observational campaign undertaken to assess the influence of the iron content on the Cepheid Period-Luminosity relation. Our data indicate that this dependence is not well represented by a simple linear relation. Rather, the behaviour is markedly non monotonic, with the correction peaking at about solar metallicity and declining for higher and lower values of [Fe/H].

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Marta Mottini, Martino Romaniello, Francesca Primas, Martin Groenewegen, Giuseppe Bono, Patrick Francois. 2004-11-08. The Metallicity dependence of the Cepheid Period-Luminosity relation: methodology and results. https://arxiv.org/abs/astro-ph/0411190

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