NLTE models of line-driven stellar winds III. Influence of X-ray radiation on wind structure of O stars
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00028478" target="_blank" >RIV/00216224:14310/09:00028478 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/09:00333237
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
NLTE models of line-driven stellar winds III. Influence of X-ray radiation on wind structure of O stars
Original language description
We study the influence of X rays on the wind structure of selected O stars. For this purpose we use our non local thermodynamic equilibrium (NLTE) wind code with inclusion of additional artificial source of X rays, assumed to originate in the wind shocks. We show that the influence of shock X ray emission on wind mass loss rate is relatively small. Wind terminal velocity may be slightly influenced by the presence of strong X ray sources, especially for stars cooler than Teff 35 000 K . We discuss the origin of the Lx/L 10 7 relation. For stars with thick wind this relation can be explained assuming that the cooling time depends on wind density. Stars with optically thin winds exhibiting the weak wind problem display enhanced X ray emission which may beconnected with large shock cooling length. We propose that this effect can explain the weak wind problem. Inclusion of X rays leads to a better agreement of the model ionization structure with observations.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
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Volume of the periodical
394
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
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UT code for WoS article
000266549600029
EID of the result in the Scopus database
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