PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6
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...
| Main Authors: | , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
IOP Publishing
2016
|
| Online Access: | http://hdl.handle.net/1721.1/101667 |
| _version_ | 1826197943419404288 |
|---|---|
| author | Huenemoerder, David P. Gayley, K. G. Hamann, W.-R. Ignace, R. Nichols, Joy S. Oskinova, Lidia M. Pollock, A. M. T. Schulz, N. S. Shenar, T. |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Huenemoerder, David P. Gayley, K. G. Hamann, W.-R. Ignace, R. Nichols, Joy S. Oskinova, Lidia M. Pollock, A. M. T. Schulz, N. S. Shenar, T. |
| author_sort | Huenemoerder, David P. |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T10:56:09Z |
| format | Article |
| id | mit-1721.1/101667 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:56:09Z |
| publishDate | 2016 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1016672022-10-01T00:04:41Z PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 Huenemoerder, David P. Gayley, K. G. Hamann, W.-R. Ignace, R. Nichols, Joy S. Oskinova, Lidia M. Pollock, A. M. T. Schulz, N. S. Shenar, T. MIT Kavli Institute for Astrophysics and Space Research Huenemoerder, David P. 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. United States. National Aeronautics and Space Administration (Chandra Award GO3-14003A) United States. National Aeronautics and Space Administration (Chandra Award GO5-16009A) 2016-03-10T16:38:51Z 2016-03-10T16:38:51Z 2015-12 2015-08 Article http://purl.org/eprint/type/JournalArticle 1538-4357 0004-637X http://hdl.handle.net/1721.1/101667 Huenemoerder, David P., K. G. Gayley, W.-R. Hamann, R. Ignace, J. S. Nichols, L. Oskinova, A. M. T. Pollock, N. S. Schulz, and T. Shenar. “PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6.” The Astrophysical Journal 815, no. 1 (December 3, 2015): 29. © 2015 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/815/1/29 The Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Huenemoerder, David P. Gayley, K. G. Hamann, W.-R. Ignace, R. Nichols, Joy S. Oskinova, Lidia M. Pollock, A. M. T. Schulz, N. S. Shenar, T. PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title | PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title_full | PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title_fullStr | PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title_full_unstemmed | PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title_short | PROBING WOLF–RAYET WINDS: CHANDRA/HETG X-RAY SPECTRA OF WR 6 |
| title_sort | probing wolf rayet winds chandra hetg x ray spectra of wr 6 |
| url | http://hdl.handle.net/1721.1/101667 |
| work_keys_str_mv | AT huenemoerderdavidp probingwolfrayetwindschandrahetgxrayspectraofwr6 AT gayleykg probingwolfrayetwindschandrahetgxrayspectraofwr6 AT hamannwr probingwolfrayetwindschandrahetgxrayspectraofwr6 AT ignacer probingwolfrayetwindschandrahetgxrayspectraofwr6 AT nicholsjoys probingwolfrayetwindschandrahetgxrayspectraofwr6 AT oskinovalidiam probingwolfrayetwindschandrahetgxrayspectraofwr6 AT pollockamt probingwolfrayetwindschandrahetgxrayspectraofwr6 AT schulzns probingwolfrayetwindschandrahetgxrayspectraofwr6 AT shenart probingwolfrayetwindschandrahetgxrayspectraofwr6 |