We present the first ultraviolet ( UV ) and multi-epoch optical spectroscopy of 30 Dor 016 , a massive O2-type star on the periphery of 30 Doradus in the Large Magellanic Cloud .
The UV data were obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope as part of the Servicing Mission Observatory Verification program after Servicing Mission 4 , and reveal # 016 to have one of the fastest stellar winds known .
From analysis of the C IV \lambda \lambda 1548-51 doublet we find a terminal velocity , v _ { \infty } = 3450 \pm 50 { kms ^ { -1 } } .
Optical spectroscopy is from the VLT-FLAMES Tarantula Survey , from which we rule out a massive companion ( with 2 d < P < 1 yr ) to a confidence of 98 % .
The radial velocity of # 016 is offset from the systemic value by - 85 { kms ^ { -1 } } , suggesting that the star has traveled the 120 pc from the core of 30 Doradus as a runaway , ejected via dynamical interactions .