Validity of Clumping Approximations for Mass-Loss Rates Determination
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F12%3A00439737" target="_blank" >RIV/67985815:_____/12:00439737 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Validity of Clumping Approximations for Mass-Loss Rates Determination
Original language description
Clumping in stellar winds of hot stars is a possible consequence of radiative-acoustic instability appearing in solutions of radiative-hydrodynamical equations. However, clumping is usually included into stellar atmosphere modeling and radiative transfercalculations in a highly approximate way via a global free parameter called the clumping factor. Using different values of clumping factors, many researchers succeeded to fit the observed spectra better and to correct empirical mass-loss rates. This usually leads to a conclusion that the stellar wind is clumped. To understand how clumping may influence theoretical predictions of mass-loss rates, different clumping properties have to be taken into account. If clumping appears already below the criticalpoint, the mass-loss rate is changed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Four Decades of Research On Massive Stars
ISBN
978-1-58381-812-1
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
128-133
Publisher name
Astronomical Society of the Pacific
Place of publication
San Francisco
Event location
Auberge Lac Taureau
Event date
Jul 11, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000316716000023