The distance to the Orion Nebula

Details The distance to the Orion Nebula The distance to the Orion Nebula

2007-09-04

arxiv.org/abs/0709.0485v1

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures, to appear in Astronomy & Astrophyiscs

Scientific paper

10.1051/0004-6361:20078247

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.

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