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Infrared Surface Brightness Distances to Cepheids

Thomas G. Barnes III·Jesper Storm·William H. Jefferys·Wolfgang P. Gieren·Pascal Fouque
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Abstract

Bayesian statistical calculations and linear-bisector calculations for obtaining Cepheid distances and radii by the infrared surface brightness method have been compared for a set of 38 Cepheids. The distances obtained by the two techniques agree to 1.5%+/-0.6% and the radii agree to 1.1%+/-0.7%. Thus the two methods yield the same distances and radii at the 2 sigma level. This implies that the short distance to the LMC found in recent linearbisector studies of Cepheids is not a result of simplifications in the mathematical approach. The computed uncertainties in distance and radius are larger in the Bayesian calculation typically by a factor of three.

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Thomas G. Barnes III, Jesper Storm, William H. Jefferys, Wolfgang P. Gieren, Pascal Fouque. 2005-09-21. Infrared Surface Brightness Distances to Cepheids. https://arxiv.org/abs/astro-ph/0509639

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