Abstract
We propose a new version of the Baade-Becker-Wesselink technique, which allows one to independently determine the color excess and the intrinsic color of a radially pulsating star, in addition to its radius, luminosity, and distance. The method is a generalization of the Balona approach. It also allows the function F(CI 0) = BC(CI 0) + 10 × log(T eff (CI 0)) for the class of pulsating stars considered to be calibrated. The reddenings of several classical Cepheids with very accurate light and radial-velocity curves and with bona fide membership in open clusters (SZ Tau, CF Cas,USgr, DL Cas,GY Sge) agree well with the reddening estimates of the host open clusters. The new technique can also be applied to other pulsating variables, e.g. RR Lyrae.
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Original Russian Text © A.S. Rastorguev, A.K. Dambis, 2011, published in Astrofizicheskij Byulleten, 2011, Vol. 66, No. 1, pp. 49–55.
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Rastorguev, A.S., Dambis, A.K. Classical Cepheids: a New version of the Baade-Becker-Wesselink method. Astrophys. Bull. 66, 47–53 (2011). https://doi.org/10.1134/S1990341311010032
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DOI: https://doi.org/10.1134/S1990341311010032