A massive runaway star from 30 Doradus

Details A massive runaway star from 30 Doradus A massive runaway star from 30 Doradus

2010-04-29

arxiv.org/abs/1004.5402v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, ApJL, in press

Scientific paper

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 CIV 1548-51 doublet we find a terminal velocity, v_infty=3450 +/- 50km/s. Optical spectroscopy is from the VLT-FLAMES Tarantula Survey, from which we rule out a massive companion (with 2d

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