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Classical Cepheids: a New version of the Baade-Becker-Wesselink method

Classical Cepheids: a New version of the Baade-Becker-Wesselink method 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Astrophysical Bulletin Springer Journals

Classical Cepheids: a New version of the Baade-Becker-Wesselink method

Rastorguev, A.; Dambis, A.
Astrophysical Bulletin , Volume 66 (1) – Mar 20, 2011
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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Physics; Astronomy, Astrophysics and Cosmology
ISSN
1990-3413
eISSN
1990-3421
DOI
10.1134/S1990341311010032
Publisher site
See Article on Publisher Site

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.

Journal

Astrophysical Bulletin – Springer Journals

Published: Mar 20, 2011

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