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Uncertainties in the Galactic Cepheid Distance Scale

Published online by Cambridge University Press:  12 April 2016

Thomas G. Barnes III  and
Thomas J. Moffett
Thomas G. Barnes III
Affiliation:
McDonald Observatory, University of Texas at Austin, Austin, TX 78712
Thomas J. Moffett
Affiliation:
Physics Department, Purdue University, W. Lafayette, IN 47907-1396

Abstract

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We have examined the uncertainties involved in using the visual surface brightness technique on Galactic Cepheid variables. The random error in a single Cepheid distance measurement is well determined to be ±8%. An upper limit to the systematic uncertainty is shown to be ±6% in distance. These combine for a single Cepheid to a typical uncertainty of ±10% and, for samples larger than ten Cepheids, to a typical uncertainty of less than ±6% in distance.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 363 - 364
Copyright
Copyright © Astronomical Society of the Pacific 1995

References

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