Published in New Astronomy Reviews, Volume 48, Issue 9, p. 659-665, 2004.
astro-ph/0310673

For a PDF version of the article, click here.

A REVIEW OF THE DISTANCE AND STRUCTURE OF THE LARGE MAGELLANIC CLOUD

David R. Alves


Columbia Astrophysics Laboratory, 550 W. 120th St., New York, NY, USA;
Email: alves@astro.columbia.edu


Abstract. The average of 14 recent measurements of the distance to the Large Magellanic Cloud (LMC) implies a true modulus of 18.50 ± 0.02 mag, and demonstrates a trend in the past 2 years of convergence toward a standard value. The distance indicators reviewed are the red clump, the tip of the red giant branch, Cepheid, RR Lyrae, and Mira variable stars, cluster main-sequence fitting, supernova 1987A, and eclipsing binaries. The eclipsing binaries yield a consistent distance on average; however, the internal scatter is twice as large as the average measurement error. I discuss parameters of LMC structure that pertain to distance indicators, and speculate that warps discovered using the color of the clump are not really warps.


Keywords: Galaxies: Magellanic Clouds; Cosmology: distance scale


Table of Contents

INTRODUCTION

RED CLUMP
Tip of Red Giant Branch

CEPHEID VARIABLE STARS

RR LYRAE VARIABLE STARS

OTHER DISTANCE INDICATORS
Mira Variables
Cluster Main-Sequence Fitting
Supernova 1987A
Eclipsing Binaries

SUMMARY OF LMC DISTANCE

STRUCTURE OF THE LMC

REFERENCES

APPENDIX A

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