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2005MNRAS.363..749T - Mon. Not. R. Astron. Soc., 363, 749-762 (2005/November-1)
Determination of Cepheid parameters by light-curve template fitting.
TANVIR N.R., HENDRY M.A., WATKINS A., KANBUR S.M., BERDNIKOV L.N. and NGEOW C.C.
Abstract (from CDS):
In this paper we focus particularly on the utility of such methods for analysing Hubble Space Telescope (HST) Cepheid photometry, and present simulations which illustrate the advantages of our PCA template-fitting approach. These are: accurate parameter determination, including LCS information; simultaneous fitting to multiple passbands; quantitative error analysis; objective rejection of variables with non-Cepheid-like light curves or those with potential period aliases.
We also use PCA to confirm that Cepheid LCSs are systematically different (at the same period) between the Milky Way and the Large and Small Magellanic Clouds, and consider whether LCS might therefore be used to estimate the mean metallicities of Cepheid samples, thus allowing metallicity corrections to be applied to derived distance estimates.
Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS
Journal keyword(s): Cepheids - stars: variables: other
Simbad objects: 5
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