The origin of the runaway high-mass X-ray binary HD153919/4U1700-37

  • A. Ankay

Abstract

Based on its Hipparcos proper motion, we propose that the high-mass X-ray binary HD153919/4U1700-37 originates in the OB association Sco OB1. At a distance of 1.9 kpc the space velocity of 4U1700-37 with respect to Sco OB1 is 75 km s−1. This runaway velocity indicates that the progenitor of the compact X-ray source lost about 7 M during the (assumed… (More)

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