Properties of massive stars in four clusters of the VVV survey
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00462769" target="_blank" >RIV/67985815:_____/16:00462769 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.newast.2015.10.009" target="_blank" >http://dx.doi.org/10.1016/j.newast.2015.10.009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.newast.2015.10.009" target="_blank" >10.1016/j.newast.2015.10.009</a>
Alternative languages
Result language
angličtina
Original language name
Properties of massive stars in four clusters of the VVV survey
Original language description
We present an analysis of massive stars in four of these new clusters. Our aim is to provide constraints on stellar evolution and to better understand the relation between different types of massive stars. We use the radiative transfer code CMFGEN to analyse K-band spectra of twelve stars with spectral types ranging from O and B to WN and WC. We derive the stellar parameters of all targets as well as surface abundances for a subset of them. In the Hertzsprung Russell diagram, the Wolf-Rayet stars are more luminous or hotter than the O stars. From the log(C/N) log(C/He) diagram, we show quantitatively that WN stars are more chemically evolved than O stars, WC stars being more evolved than WN stars. Mass loss rates among Wolf-Rayet stars are a factor of 10 larger than for O stars, in agreement with previous findings.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA14-02385S" target="_blank" >GA14-02385S: Transfer of polarized radiation in stellar atmospheres</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Astronomy
ISSN
1384-1076
e-ISSN
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Volume of the periodical
45
Issue of the periodical within the volume
May
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
84-91
UT code for WoS article
000369200700012
EID of the result in the Scopus database
2-s2.0-84949575751