The relative impact of photoionizing radiation and stellar winds on different environments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00496061" target="_blank" >RIV/67985815:_____/18:00496061 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/mnras/sty1315" target="_blank" >http://dx.doi.org/10.1093/mnras/sty1315</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/sty1315" target="_blank" >10.1093/mnras/sty1315</a>

Result language
angličtina
Original language name
The relative impact of photoionizing radiation and stellar winds on different environments
Original language description
We present simulations of the interaction of stellar winds and ionizing radiation of 12, 23, and 60 M-circle dot stars within a cold neutral (CNM, n(0) = 100 cm(-3)), warm neutral (WNM, n(0) = 1, 10 cm (-3)), or warm ionized (WIM, n(0) = 0.1 cm(-3)) medium. The FLASH simulations adopt the novel tree-based radiation transfer algorithm TREERAY. With the On-the-Spot approximation and a temperature-dependent recombination coefficient, it is coupled to a chemical network with radiative heating and cooling. In the homogeneous CNM, the total momentum injection ranges from 1.6 x 10(4) to 4 x 105 M-circle dot km s(-1) and is always dominated by the expansion of the ionized HII region. In the WIM, stellar winds dominate (2 x 10(2) to 5 x 10(3) M-circle dot km s(-1)), while the input from radiation is small (similar to 10(2) M-circle dot km s(-1)). The WNM (n(0) = 1 cm(-3)) is a transition regime. Energetically, stellar winds couple more efficiently to the ISM (similar to 0.1 percent of wind luminosity) than radiation (< 0.001 percent of ionizing luminosity). For estimating the impact of massive stars, the strongly mass-dependent ratios of wind to ionizing luminosity and the properties of the ambient medium have to be considered.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GB14-37086G" target="_blank" >GB14-37086G: Albert Einstein Center for Gravitation and Astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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