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The Distance to the Large Magellanic Cloud

Published online by Cambridge University Press:  12 April 2016

Piotr Popowski
Piotr Popowski*
Affiliation:
Institute of Geophysics and Planetary Physics, L-413 Lawrence Livermore National Laboratory, University of California P. O. Box 808, Livermore, CA 94551, USA

Abstract

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I demonstrate that the two unexpected results in the local Universe: anomalous intrinsic (V – I)0 colors of RR Lyrae stars and clump giants in the Galactic center, and very short distances to Magellanic Clouds inferred from clump giants, can be at least partially resolved with a modified coefficient of selective extinction AV/E(V – I). With this modification, I find a new clump-giant distance modulus to the Large Magellanic Cloud, μLMC = 18.27 ± 0.07, which is 0.09 larger than the Udalski (1998b) result. When distance estimates from the red clump, RR Lyrae stars and the eclipsing binary HV2274 are combined, one obtains μLMC = 18.31 ± 0.04 (internal).

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 203 - 207
Copyright
Copyright © Astronomical Society of the Pacific 2000

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