A Direct Distance to the LMC Cepheid HV 12198 from the Infrared Surface Brightness Technique
W. P. Gieren, J. Storm, P. Fouque, R. E. Mennickent, M. Gomez
Abstract
We report on a first application of the infrared surface brightness technique on a Cepheid in the Large Magellanic Cloud, the variable HV 12198 in the young globular cluster NGC 1866. From this one star, we determine a distance modulus of 18.42 +- 0.10 (random and systematic uncertainty) to the cluster. When the results on further member Cepheids in NGC 1866 become available, we expect to derive the distance to the LMC with a +- 3-4 percent accuracy, including systematic errors, from this technique.
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