Wind Models of Massive Stars and Mass-Loss Rates Determination

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552696" target="_blank" >RIV/67985815:_____/21:00552696 - isvavai.cz</a>

Výsledek na webu

<a href="https://publications.aob.rs/100/pdf/107-114.pdf" target="_blank" >https://publications.aob.rs/100/pdf/107-114.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Wind Models of Massive Stars and Mass-Loss Rates Determination

Popis výsledku v původním jazyce

Determination of mass-loss rates of massive stars is an important output of massive star analysis, which influences our understanding of stellar evolution. Stellar mass-loss rates are usually determined using wind models with a different level of sophistication. Commonly used models are based on an assumption of spherical symmetry and solve the NLTE radiative transfer consistently for a given density and velocity structure, which means that the hydrodynamic structure is held fixed. Usually, an approximate dependence of velocity on radius is being assumed (the so-called β-velocity law). Using a different approach, mass-loss rates can be predicted by hydrodynamic models, which do not solve the radiative transfer, but they describe the radiation force in a parametric way (using force multipliers). The most sophisticated wind models do not use the simplifications of the β-velocity law and the force multlipliers. Consistent NLTE wind models including both the wind dynamics and NLTE radiative transfer can be calculated.

Název v anglickém jazyce

Wind Models of Massive Stars and Mass-Loss Rates Determination

Popis výsledku anglicky

Determination of mass-loss rates of massive stars is an important output of massive star analysis, which influences our understanding of stellar evolution. Stellar mass-loss rates are usually determined using wind models with a different level of sophistication. Commonly used models are based on an assumption of spherical symmetry and solve the NLTE radiative transfer consistently for a given density and velocity structure, which means that the hydrodynamic structure is held fixed. Usually, an approximate dependence of velocity on radius is being assumed (the so-called β-velocity law). Using a different approach, mass-loss rates can be predicted by hydrodynamic models, which do not solve the radiative transfer, but they describe the radiation force in a parametric way (using force multipliers). The most sophisticated wind models do not use the simplifications of the β-velocity law and the force multlipliers. Consistent NLTE wind models including both the wind dynamics and NLTE radiative transfer can be calculated.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Publications of the Astronomical Observatory of Belgrade

ISSN

0373-3742

e-ISSN

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Svazek periodika

100

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

RS - Srbská republika

Počet stran výsledku

8

Strana od-do

107-114

Kód UT WoS článku

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EID výsledku v databázi Scopus

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