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URN: urn:nbn:de:kobv:517-opus-18085
URL: http://opus.kobv.de/ubp/volltexte/2008/1808/
Leutenegger, M. A. ;
Cohen, D. H. ;
Kahn, S. M. ;
Owocki, S. P. ;
Paerels, F. B. S.
Resonance scattering in the X-ray emission lines profiles of ζ Puppis
Kurzfassung in Englisch
We present XMM-Newton Reflection Grating Spectrometer observations of pairs of X-ray emission line profiles from the O star ζ Pup that originate from the same He-like ion. The two profiles in each pair have different shapes and cannot both be consistently fit by models assuming the same wind parameters. We show that the differences in profile shape can be accounted for in a model including the effects of resonance scattering, which affects the resonance line in the pair but not the intercombination line. This implies that resonance scattering is also important in single resonance lines, where its effect is difficult to distinguish from a low effective continuum optical depth in the wind. Thus, resonance scattering may help reconcile X-ray line profile shapes with literature mass-loss rates.
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RVK - Regensburger Verbundklassifikation: |
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US 1999.07 |
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Collection 1: |
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Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 |
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Collection 2: |
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Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 / Talks and Discussions (in alphabetical order) |
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Collection 3: |
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Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 / Talks and Discussions (organized by sections) / X-rays |
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Institut: |
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Extern |
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DDC-Sachgruppe: |
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Astronomie |
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Dokumentart: |
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c InProceedings (Aufsatz / Paper einer Konferenz etc.) |
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Sprache: |
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Englisch |
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Erstellungsjahr: |
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2007 |
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Publikationsdatum: |
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25.04.2008 |
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Bemerkung: |
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The complete edition of the proceedings "Clumping in hot-star winds" is available:
urn:nbn:de:kobv:517-opus-13981 |
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Lizenz: |
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