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The SMC RR-Lyrae Variables and their Metal Abundances

Citation:

Kapakos E, Hatzidimitriou D, Soszynski I. The SMC RR-Lyrae Variables and their Metal Abundances. In: Vol. 424. ; 2010. pp. 233.

Date Presented:

2010/07/1

Abstract:

We derive metal abundances ([Fe/H]) of 472 RR-Lyrae variables of RRab type in the Small Magellanic Cloud (SMC), based on extended and merged data provided by the OGLE II and OGLE III projects. Fourier decomposition of the 11-year V-band light curves of the variables and Monte Carlo simulations have been used to derive Fourier parameters which are related to [Fe/H]. We examine possible correlations between [Fe/H] and projected distance from the dynamical center (DC) of the SMC. We also derive the distance along the line of sight of the RR-Lyrae variables which represent the old populations in the SMC. (Kapakos et al., in prep.)

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