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2007•Astronomy and AstrophysicsOpen access

Quasi-binarity of massive stars in young dense clusters – the case of the Orion nebula cluster

Susanne Pfalzner, C. Olczak

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Abstract

Context.Observations indicate that in young stellar clusters the binary fraction for massive stars is higher than for solar mass stars. For the Orion Nebula Cluster (ONC) there is a binary frequency of ~50% for solar-mass stars compared to 70–100% for the massive O- and B-stars.

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Context.Observations indicate that in young stellar clusters the binary fraction for massive stars is higher than for solar mass stars. For the Orion Nebula Cluster (ONC) there is a binary frequency of ~50% for solar-mass stars compared to 70–100% for the massive O- and B-stars.

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Available abstract

Context.Observations indicate that in young stellar clusters the binary fraction for massive stars is higher than for solar mass stars. For the Orion Nebula Cluster (ONC) there is a binary frequency of ~50% for solar-mass stars compared to 70–100% for the massive O- and B-stars.

Key concepts: Physics, Stars, Astrophysics, Orion Nebula, Astronomy, Open cluster, Stellar mass loss, Solar mass

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