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101667 |
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|a Huenemoerder, David P.
|e author
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|a MIT Kavli Institute for Astrophysics and Space Research
|e contributor
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|a Huenemoerder, David P.
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|a Gayley, K. G.
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|a Hamann, W.-R.
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|a Ignace, R.
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|a Nichols, Joy S.
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|a Oskinova, Lidia M.
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|a Pollock, A. M. T.
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|a Schulz, N. S.
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|a Shenar, T.
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|a PROBING WOLF-RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6
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|b IOP Publishing,
|c 2016-03-10T16:38:51Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/101667
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|a With a deep Chandra/HETGS exposure of WR 6, we have resolved emission lines whose profiles show that the X-rays originate from a uniformly expanding spherical wind of high X-ray-continuum optical depth. The presence of strong helium-like forbidden lines places the source of X-ray emission at tens to hundreds of stellar radii from the photosphere. Variability was present in X-rays and simultaneous optical photometry, but neither were correlated with the known period of the system or with each other. An enhanced abundance of sodium revealed nuclear-processed material, a quantity related to the evolutionary state of the star. The characterization of the extent and nature of the hot plasma in WR 6 will help to pave the way to a more fundamental theoretical understanding of the winds and evolution of massive stars.
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|a United States. National Aeronautics and Space Administration (Chandra Award GO3-14003A)
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|a United States. National Aeronautics and Space Administration (Chandra Award GO5-16009A)
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|a Article
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|t The Astrophysical Journal
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