How fast is mass segregation happening in hierarchically formed embedded star clusters?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10369283" target="_blank" >RIV/00216208:11320/17:10369283 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/mnras/stx1883" target="_blank" >http://dx.doi.org/10.1093/mnras/stx1883</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stx1883" target="_blank" >10.1093/mnras/stx1883</a>

Result language

angličtina

Original language name

How fast is mass segregation happening in hierarchically formed embedded star clusters?

Original language description

We investigate the evolution of mass segregation in initially substructured young embedded star clusters with two different background potentials mimicking the gas. Our clusters are initially in virial or subvirial global states and have different initial distributions for the most massive stars: randomly placed, initially mass segregated or even inversely segregated. By means of N-body simulation, we follow their evolution for 5 Myr. We measure the mass segregation using the minimum spanning tree method Lambda(MSR) and an equivalent restricted method. Despite this variety of different initial conditions, we find that our stellar distributions almost always settle very fast into a mass segregated and more spherical configuration, suggesting that once we see a spherical or nearly spherical embedded star cluster, we can be sure it is mass segregated no matter what the real initial conditions were. We, furthermore, report under which circumstances this process can be more rapid or delayed, respectively.

Czech name

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Czech description

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Type

J_imp - 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)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

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Volume of the periodical

472

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

465-474

UT code for WoS article

000413765800037

EID of the result in the Scopus database

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