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The Galactic Cepheid Period-Luminosity Relation from Hipparcos Parallaxes and Proper Motions

Published online by Cambridge University Press:  12 April 2016

William D. Heacox
William D. Heacox*
Affiliation:
University of Hawaii at Hilo, 200 W. Kawili Street, Hilo, HI 96720, USA

Abstract

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A Bayesian model of Cepheid kinematics has been applied to the Hipparcos parallaxes and proper motions to obtain an independent estimate of the Galactic Cepheid Period-Luminosity relation for visual magnitudes. The resulting estimate includes a slope that differs significantly from those of Magellanic Cloud Cepheids, suggestive of a lack of universality amongst galaxies in Cepheid P-L calibration.

Type
Part 9. Evolutionary and pulsation properties of variable stars
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 547 - 550
Copyright
Copyright © Astronomical Society of the Pacific 2004

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