Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-03-04
Astronomy and Astrophysics
Astrophysics
4 pages, 2 figures. To appear in Proceedings of the Workshop " Variability with Wide Field Imagers", 16-20 Sept. 2002, Lampedu
Scientific paper
New B, V, I photometry was obtained for a sample of 152 variables (125 RR Lyrae's, 4 anomalous Cepheids, 11 classical Cepheids, 11 eclipsing binaries and a delta Scuti star) in two regions near the bar of the Large Magellanic Cloud (LMC). We derived complete and well sampled B and V light curves, very accurate periods, epochs of maximum light, amplitudes, intensity- and magnitude-averaged apparent luminosities for about 95% of the RR Lyrae stars. All these informations are contained in the photometric catalogue. Metallicities from the Fourier decomposition of the V light curves were derived for 29 of the ab type RR Lyrae's and are compared with the DeltaS metal abundances from low resolution spectra obtained with the Very Large Telescope (VLT).
Bragaglia Angela
Carretta Eugenio
Clementini Gisella
Fabrizio L. Di
Gratton Raffaele
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