Hot star wind mass-loss rate predictions at low metallicity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00522767" target="_blank" >RIV/67985815:_____/19:00522767 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/19:00108271
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921318005331" target="_blank" >http://dx.doi.org/10.1017/S1743921318005331</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921318005331" target="_blank" >10.1017/S1743921318005331</a>
Alternative languages
Result language
angličtina
Original language name
Hot star wind mass-loss rate predictions at low metallicity
Original language description
Hot star winds are driven by the radiative force due to light absorption in lines of heavier elements. Therefore, the amount of mass lost by the star per unit of time, i.e., the mass-loss rate, is sensitive to metallicity. We provide mass-loss rate predictions for O stars with mass fraction of heavier elements 0.2 <Z/Z☉ <= 1. Our predictions are based on global model atmospheres. The models allow us to predict wind terminal velocity and the mass-loss rate just from basic global stellar parameters. We provide a formula that fits the mass-loss rate predicted by our models as a function of stellar luminosity and metallicity. On average, the mass-loss rate scales with metallicity as (Z/Z☉)0.59. The predicted mass-loss rates agree with mass-loss rates derived from ultraviolet wind line profiles. At low metallicity, the rotational mixing affects the wind mass-loss rates. We study the influence of magnetic line blanketing.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA18-05665S" target="_blank" >GA18-05665S: Mass-loss in evolved massive stars</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Dwarf Galaxies: From the Deep Universe to the Present
ISBN
9781108471619
ISSN
1743-9213
e-ISSN
—
Number of pages
3
Pages from-to
208-210
Publisher name
Cambridge Univeristy Press
Place of publication
Cambridge
Event location
Vienna
Event date
Aug 20, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—