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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

472

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

465-474

Kód UT WoS článku

000413765800037

EID výsledku v databázi Scopus

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