The distance to the Orion Nebula
The distance to the Orion Nebula
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DOI：
10.1051/0004-6361:20078247
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发表时间：
2007-09
影响因子：
6.5
通讯作者：
K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler
中科院分区：
文献类型：
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作者：
K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler
我们用甚长基线阵列测量了猎户座星云团几颗成员星的三角视差，显示出非热射电辐射。我们已经确定到星团的距离为414 ± 7 pc。我们的距离测定可以改进年轻恒星的光度和年龄的校准。我们还测量了四个星团恒星的自行，当精确的径向速度测量时，将对星团的起源产生很大的约束。
We have used the Very Long Baseline Array to measure the trigonometric parallax of several member stars of the Orion Nebula Cluster showing non-thermal radio emission. We have determined the distance to the cluster to be 414 ± 7 pc. Our distance determination allows for an improved calibration of luminosities and ages of young stars. We have also measured the proper motions of four cluster stars which, when accurate radial velocities are measured, will put strong constraints on the origin of the cluster.