The Distance to the LMC via the Eclipsing Binary HV 2274

Details The Distance to the LMC via the Eclipsing Binary HV 2274 The Distance to the LMC via the Eclipsing Binary HV 2274

1999-10-08

arxiv.org/abs/astro-ph/9910172v2

Astronomy and Astrophysics

Astrophysics

submitted to AJ, revised version, results unchanged, omission in acknowledgements corrected

Scientific paper

10.1086/301268

We present UBV photometry of the eclipsing binary Harvard Variable 2274 in the Large Magellanic Cloud (LMC). The stellar parameters of this binary system were calculated by Guinan et al. (1998a) who gave both a reddening towards HV 2274 of E(B-V) = 0.083 +/- 0.006 and a distance modulus to the LMC, mu_{LMC} = 18.42 +/- 0.007. The reddening of this system was also determined by Udalski et al. (1998) who found E(B-V) = 0.149 +\- 0.015. With Udalski et al. (1998) B and V photometry Guinan et al.(1998b) obtained E(B-V) = 0.120 +\- 0.009 and mu_{LMC} = 18.30 +\- 0.07. Using our UBV photometry, we derive a reddening of E(B-V)= 0.088 +\- 0.025, consistent with the original value of Guinan et al. (1998a) and supporting a longer distance modulus to the LMC of about mu_{LMC} = 18.40 +\- 0.07. We stress the uncertainties inherent in ground-based UBV photometry and the concomitant uncertainties in determining distances based upon such photometry.

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