The SMC RR-Lyrae Variables and their Metal Abundances

Details The SMC RR-Lyrae Variables and their Metal Abundances The SMC RR-Lyrae Variables and their Metal Abundances

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..424..233k&link_type=abstract

Proceedings of the 9th International Conference of the Hellenic Astronomical Society, proceedings of a conference held 20-24 Sep

Astronomy and Astrophysics

Astronomy

1

Scientific paper

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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