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

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

2004-01-09

arxiv.org/abs/astro-ph/0401151v1

Astron.Astrophys. 415 (2004) 521-529

Astronomy and Astrophysics

Astrophysics

Accepted for publication in A&A, 23 pages, 10 figures, data tables will be made available electronically from the CDS

Scientific paper

10.1051/0004-6361:20034633

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 are presented in a companion paper.

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