On the origin of the o and b-type stars with high velocities II runaway stars and pulsars ejected from the nearby young stellar groups

  title={On the origin of the o and b-type stars with high velocities II runaway stars and pulsars ejected from the nearby young stellar groups},
  author={Ronnie Hoogerwerf and Jos H.J. de Bruijne and P. T. de Zeeuw},
  journal={Astronomy and Astrophysics},
We use milli-arcsecond accuracy astrometry (proper motions and parallaxes) from Hipparcos and from radio observations to retrace the orbits of 56 runaway stars and nine compact objects with distances less than 700 pc, to identify the parent stellar group. It is possible to deduce the specific formation scenario with near certainty for two cases. (i) We find that the runaway star ζ Ophiuchi and the pulsar PSR J1932+1059 originated about 1 Myr ago in a supernova explosion in a binary in the Upper… Expand
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