BVRIJK light curves and radial velocity curves for selected Magellanic Cloud Cepheids

We present high-precision and well sampled BVRIJK light curves and radial velocity curves for a sample of five Cepheids in the SMC. In addition we present radial velocity curves for three Cepheids in the LMC. The low-metallicity ([Fe/H] ≈ -0.7) SMC stars have been selected for use in a Baade-Wesselink type analysis to constrain the metallicity effect on the Cepheid Period-Luminosity relation. The stars have periods of around 15 days so they are similar to the Cepheids observed by the Extragalactic Distance Scale Key Project on the Hubble Space Telescope. We show that the stars are representative of the SMC Cepheid population at that period and thus will provide a good sample for the proposed analysis. The actual Baade-Wesselink analysis is presented in a companion paper.

Based on data acquired at the Las Campanas Observatory, Chile, the Cerro Tololo Inter American Observatory, Chile, and the European Southern Observatory, Chile.

Tables 10-27 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi.bin/qcat?J/A+A/415/521