The distance to the LMC from UVBY beta photometry of B stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astrometry, Astronomical Photometry, B Stars, Magellanic Clouds, Cepheid Variables, Distance, Interstellar Extinction, Stellar Luminosity, Ultraviolet Photometry

Scientific paper

uvbyβ photometry of non-supergiant B stars in the LMC obtained with the 3.9-m Anglo-Australian telescope has been combined with earlier data published on B supergiants to give a distance modulus of 18.3±0.2, corresponding to a distance of 46 kpc. This result is independent of the methods using Cepheids. It uses the same calibration of the luminosities of B stars as is used to determine the zero-point of the Cepheid P/L/C relation in our Galaxy, and provides an independent check of that zero-point within the LMC.

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