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Cepheid Radii from Infrared Photometry

Published online by Cambridge University Press:  12 April 2016

D. L. Welch ,
Nancy Remage Evans  and
G. Drukier
D. L. Welch
Affiliation:
Dept. of Astronomy, University of Toronto
Nancy Remage Evans
Affiliation:
Dept. of Astronomy, University of Toronto
G. Drukier
Affiliation:
Dept. of Astronomy, University of Toronto

Abstract

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We have determined radii for Cepheids using nearinfrared K(2.2 µm) photometry and Balona’s approach to the Baade-Wesselink method of radius determination. The lower sensitivity of the K flux to temperature variations results in improved sensitivity to radius changes. We present the results of maximum-likelihood radius solutions for Cepheids with modern radial velocity curves. We point out limitations of the Balona technique as it is currently applied in the optical and suggest improvements.

Type
Part I. Fundamental Parameters
Information
International Astronomical Union Colloquium , Volume 82: Cepheids: Theory and Observations , 1985 , pp. 51 - 52
Copyright
Copyright © Cambridge University Press 1985

References

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