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    Wiebe, Dmitri S. and Watson, William D. 2001. Irregular Magnetic Fields in Interstellar Clouds and the Linear Polarization of Starlight. The Astrophysical Journal, Vol. 549, Issue. 1, p. L115.
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Binarity in the Orion Trapezium Cluster

  • Mark J. McCaughrean (a1)
Abstract

We summarise the results of recent optical and near-infrared imaging studies of the binary fraction among young low-mass stars in the dense Orion Trapezium Cluster. Over the separation range ∼ 30–500 AU and within the observational errors, there appears to be no excess of binary systems in the cluster relative to the main sequence field star population. Over the separation range ∼ 1000–5000 AU, the cluster is deficient in binaries relative to the field. Both results are in contrast to those found for the more distributed population of young stars in the Taurus-Auriga dark clouds, which is overabundant in binaries by roughly a factor of two. We briefly discuss possible origins for this difference and observational tests which may distinguish between them, and the implications these results have for our understanding of the typical environment where most young stars are born.

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Copyright
COPYRIGHT: © Astronomical Society of the Pacific 2001 
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