Wind properties of variable B supergiants Evidence of pulsations connected with mass-loss episodes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00500773" target="_blank" >RIV/67985815:_____/18:00500773 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201731678" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201731678</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201731678" target="_blank" >10.1051/0004-6361/201731678</a>
Alternative languages
Result language
angličtina
Original language name
Wind properties of variable B supergiants Evidence of pulsations connected with mass-loss episodes
Original language description
To discuss the wind properties and variability of evolved B-type stars, we derive new stellar and wind parameters for a sample of 19 Galactic BSGs by fitting theoretical line profiles of H, He, and Si to the observed ones and compare them with previous determinations. Our results also suggest that radial pulsation modes with periods longer than 6 days might be responsible for the wind variability in the mid/late-type. These radial modes might be identified with strange modes, which are known to facilitate (enhanced) mass loss. On the other hand, we propose that the wind behaviour of stars on the cool side of the bi-stability jump could fit with predictions of the delta-slow hydrodynamics solution for radiation-driven winds with highly variable ionization.
Czech name
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Czech description
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Classification
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)
Result continuities
Project
<a href="/en/project/GA17-02337S" target="_blank" >GA17-02337S: Molecules in the environments of evolved massive stars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
1432-0746
e-ISSN
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Volume of the periodical
614
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
28
Pages from-to
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UT code for WoS article
000435609900001
EID of the result in the Scopus database
2-s2.0-85049162952