SIMBAD references

2007ApJ...667.1161S - Astrophys. J., 667, 1161-1169 (2007/October-1)

A parallactic distance of 389+24–21 parsecs to the Orion nebula cluster from very long baseline array observations.

SANDSTROM K.M., PEEK J.E.G., BOWER G.C., BOLATTO A.D. and PLAMBECK R.L.

Abstract (from CDS):

We determine the parallax and proper motion of the flaring, nonthermal radio star GMR A, a member of the Orion Nebula Cluster, using Very Long Baseline Array observations. Based on the parallax, we measure a distance of 389+24–21 pc to the source. Our measurement places the Orion Nebula Cluster considerably closer than the canonical distance of 480±80 pc determined by Genzel et al. A change of this magnitude in distance lowers the luminosities of the stars in the cluster by a factor of ∼1.5. We briefly discuss two effects of this change–an increase in the age spread of the pre-main-sequence stars, and better agreement between the zero-age main sequence and the temperatures and luminosities of massive stars.

Abstract Copyright:

Journal keyword(s): Astrometry - Galaxy: Open Clusters and Associations: Individual: Name: Orion Nebula Cluster - Stars: Distances - stars: individual (GMR A) - Techniques: Interferometric

Simbad objects: 12

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2020.02.21-05:09:19

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