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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GB14-37086G" target="_blank" >GB14-37086G: Centrum Alberta Einsteina pro gravitaci a astrofyziku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

1365-2966

e-ISSN

—

Svazek periodika

478

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

4799-4815

Kód UT WoS článku

000441288300034

EID výsledku v databázi Scopus

2-s2.0-85050800778