Primordial mass segregation of star clusters with primordial binaries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00537736" target="_blank" >RIV/67985815:_____/20:00537736 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202037490" target="_blank" >https://doi.org/10.1051/0004-6361/202037490</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202037490" target="_blank" >10.1051/0004-6361/202037490</a>
Alternative languages
Result language
angličtina
Original language name
Primordial mass segregation of star clusters with primordial binaries
Original language description
Since a significant fraction of stars are observed in binary systems and it is widely accepted that most stars are born in binary systems, we aim to investigate what role a primordial binary population (even up to 100% binaries) plays in the loss of primordial mass segregation of young star clusters. We used numerical N-body models similar in size to the Orion Nebula Cluster (ONC) - a representative of young open clusters - integrated over several relaxation times to draw conclusions on the evolution of its mass segregation. We also compared our models to the observed ONC. We found that tau(v) depends on the binary star fraction and the distribution of initial binary parameters that include a semi-major axis, eccentricity, and mass ratio. For instance, in the models with 50% binaries, we find tau(v)=(2.7 +/- 0.8) t(rh), while for 100% binary fraction, we find a lower value tau(v)=(2.1 +/- 0.6) t(rh). We also conclude that the initially completely mass segregated clusters, even with binaries, are more compatible with the present-day ONC than the non-segregated ones.
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/GA18-20083S" target="_blank" >GA18-20083S: Gaia-GALEX survey of hot subdwarf stars</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
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
638
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
11
Pages from-to
A155
UT code for WoS article
000549956900004
EID of the result in the Scopus database
2-s2.0-85088272482