Journal Article

The absolute magnitudes of Cepheids and the extragalacticdistance scale

Michael Feast

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 293, issue 1, pages L27-L28
Published in print January 1998 | ISSN: 0035-8711
Published online January 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.01277.x
The absolute magnitudes of Cepheids and the extragalacticdistance scale

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Abstract

It is pointed out that a Cepheid period-luminosity relation with a zero-point from Hipparcos trigonometrical parallaxes and a consistent reddening system zero-point implies that some recent estimates of H0 based on the Cepheid scale should be increased by ∼8 per cent. This result avoids using the distance to the Large Magellanic Cloud (LMC) as an intermediary point but is not significantly different from the result obtained by Feast & Catchpole via the LMC. A number of other issues are discussed, including metallicity effects on Cepheid distances and reddenings, and the age of metal-poor globular clusters.

Keywords: Cepheids; distance scale

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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