Where the stellar wind impinges the interstellar medium
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00640554" target="_blank" >RIV/67985815:_____/25:00640554 - isvavai.cz</a>
Výsledek na webu
<a href="http://www.astronomiaargentina.org.ar/uploads/docs/baaa66.pdf" target="_blank" >http://www.astronomiaargentina.org.ar/uploads/docs/baaa66.pdf</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Where the stellar wind impinges the interstellar medium
Popis výsledku v původním jazyce
Massive stars have strong radiation-driven winds, losing part of their mass along their evolution. A separatrix surface called 'astropause' is formed due to the encounter of the winds with the interstellar medium. The astropause separates the stellar wind region, the astrosphere, from the outer streaming interstellar medium. At the apex of the astropause, the stagnation point is located. At that point, the streaming velocity of both flows, namely the flow of the interstellar medium and the stellar wind flow, vanishes. The velocity field in the astropause region can be described by potential theory, while the well-known m-CAK theory can be used to model the radiation-driven wind, in the proximity of the star. In this work, we aim to describe the interaction between the stellar wind and their surrounding, by connecting the results of both theories. We propose a criterion to define the validity regions of both theories, and we found a relation between the stellar wind parameters (mass-loss rate and terminal velocity), the interstellar medium conditions, and the distance between the star and the stagnation point (called the stagnation distance).
Název v anglickém jazyce
Where the stellar wind impinges the interstellar medium
Popis výsledku anglicky
Massive stars have strong radiation-driven winds, losing part of their mass along their evolution. A separatrix surface called 'astropause' is formed due to the encounter of the winds with the interstellar medium. The astropause separates the stellar wind region, the astrosphere, from the outer streaming interstellar medium. At the apex of the astropause, the stagnation point is located. At that point, the streaming velocity of both flows, namely the flow of the interstellar medium and the stellar wind flow, vanishes. The velocity field in the astropause region can be described by potential theory, while the well-known m-CAK theory can be used to model the radiation-driven wind, in the proximity of the star. In this work, we aim to describe the interaction between the stellar wind and their surrounding, by connecting the results of both theories. We propose a criterion to define the validity regions of both theories, and we found a relation between the stellar wind parameters (mass-loss rate and terminal velocity), the interstellar medium conditions, and the distance between the star and the stagnation point (called the stagnation distance).
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Boletín de la Asociación Argentina de Astronomía
ISBN
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ISSN
0571-3285
e-ISSN
1669-9521
Počet stran výsledku
3
Strana od-do
227-229
Název nakladatele
Asociacion Argentina de Astronomia
Místo vydání
La Plata
Místo konání akce
La Plata
Datum konání akce
16. 9. 2024
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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