Gieren WP, Storm J, Fouqué P, Mennickent RE, Gómez M
Astrophys J. 2000 Apr 20;533(2):L107-L110. doi: 10.1086/312632.
We report on the 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% accuracy, including systematic errors, from this technique.
我们报告了红外表面亮度技术在大麦哲伦星系中一颗造父变星上的首次应用，该造父变星是年轻球状星团NGC 1866中的变星HV 12198。通过这一颗恒星，我们确定该星团的距离模数为18.42±0.10（随机和系统不确定性）。当NGC 1866中更多成员造父变星的结果可用时，我们预计通过该技术可得出距离大麦哲伦星系的距离，其精度可达±3%-4%，包括系统误差。
