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arXiv · 0909.4928

On the origin of the hypervelocity runaway star HD271791

V. V. Gvaramadze
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Abstract

We discuss the origin of the runaway early B-type star HD271791 and show that its extremely high velocity (\simeq 530-920 km/s) cannot be explained within the framework of the binary-supernova ejection scenario. Instead, we suggest that HD271791 attained its peculiar velocity in the course of a strong dynamical encounter between two hard massive binaries or via an exchange encounter between a hard massive binary and a very massive star, formed through runaway mergers of ordinary massive stars in the dense core of a young massive star cluster.

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V. V. Gvaramadze. 2009-09-27. On the origin of the hypervelocity runaway star HD271791. https://doi.org/10.1017/s1743921309991141

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