The distance to the Large Magellanic Cloud from OB stars

Spectral classification and H-gamma equivalent widths of 25 OB stars in the Large Magellanic Cloud (LMC) give true distance moduli of the LMC of 18.6 plus or minus 0.1 mag and 18.7 plus or minus 0.2 mag, respectively. Combining the results of the two methods yields 18.63 plus or minus 0.2 mag, where the errors arising from the calibrations are included. These calibrations do not uniquely rest upon the distance modulus to the Hyades. The strengths of the H, He, and Si IV lines in the LMC stars are apparently normal. Radial velocities, projected rotational velocities, spectral types, equivalent widths, and reddening estimates are given for each star.