Binary Capture Rates for Massive Protostars

Abstract

The high multiplicity of massive stars in dense, young clusters is established early in their evolution. The mechanism behind this remains unresolved. Recent results suggest that massive protostars may capture companions through disk interactions with much higher efficiency than their solar mass counterparts. However, this conclusion is based on analytic determinations of capture rates and estimates of the robustness of the resulting binaries. We present the results of coupled n-body and SPH simulations of star-disk encounters to further test the idea that disk-captured binaries contribute to the observed multiplicity of massive stars.

4 pages, 3 figures, accepted to ApJL

References in corpus (6)

• Radiation-Hydrodynamic Simulations of Collapse and Fragmentation in Massive Protostellar Cores
• Fragmentation of Massive Protostellar Disks
• The Fate of Discs around Massive Stars in Young Clusters
• Capture Formed Binaries via Encounters with Massive Protostars
• Gravitational Instabilities induced by Cluster Environment? - The encounter-induced angular momentum transfer in discs
• Cluster-assisted accretion for massive stars

Cited by in corpus (4)

• The Effects of Radiative Transfer on Low-Mass Star Formation
• Adaptive Optics Photometry and Astrometry of Binary Stars. III. A Faint Companion Search of O-Star Systems
• Encounters in the ONC - observing imprints of star-disc interactions
• Quasi-binarity of massive stars in young dense clusters - the case of the ONC