Hypervelocity A & B Stars should be slow rotators

Details Hypervelocity A & B Stars should be slow rotators Hypervelocity A & B Stars should be slow rotators

2007-11-07

arxiv.org/abs/0711.1164v1

Astronomy and Astrophysics

Astrophysics

11 pages, including 4 figures. To appear in Astrophysical Journal Letters

Scientific paper

10.1086/525528

The most commonly accepted explanation for the origin of hypervelocity stars in the halo of the Milky Way is that they are the result of tidal disruption of binaries by the massive black hole at the center of the Galaxy. We show that, if this scenario is correct, and if the original binary properties are similar to those in the local stellar neighbourhood, then the hypervelocity stars should rotate with velocities measureably lower than those for field stars of similar spectral type. This may prove to be a more direct test of the model than trying to predict the position and velocity distributions.

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