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arXiv · 1607.03321

Metal-rich or misclassified? The case of four RR Lyrae stars

L. Molnár·Á. L. Juhász·E. Plachy·R. Szabó
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Abstract

We analysed the light curve of four, apparently extremely metal-rich fundamental-mode RR Lyrae stars. We identified two stars, MT Tel and ASAS J091803-3022.6 as RRc (first-overtone) pulsators that were misclassified as RRab ones in the ASAS survey. In the case of the other two stars, V397 Gem and ASAS J075127-4136.3, we could not decide conclusively, as they are outliers in the period-Fourier-coefficient space from the loci of both classes, but their photometric metallicities also favour the RRc classification.

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L. Molnár, Á. L. Juhász, E. Plachy, R. Szabó. 2016-07-12. Metal-rich or misclassified? The case of four RR Lyrae stars. https://arxiv.org/abs/1607.03321

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