Primordial mass segregation of star clusters: The role of binary stars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00537738" target="_blank" >RIV/67985815:_____/20:00537738 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0315591" target="_blank" >http://hdl.handle.net/11104/0315591</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/caosp.2020.50.2.456" target="_blank" >10.31577/caosp.2020.50.2.456</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Primordial mass segregation of star clusters: The role of binary stars

Popis výsledku v původním jazyce

Observational results of young star-forming regions suggest that star clusters are completely mass segregated at birth. As a star cluster evolves dynamically, these initial conditions are gradually lost. For star clusters with single stars only and a canonical IMF, it has been suggested that traces of these initial conditions vanish at tau(v) between 3 and 3.5 half-mass relaxation times. Here, by means of numerical models, we investigate the role of the primordial binary population on the loss of primordial mass segregation. We found that tau(v) does not depend on the binary star distribution, yielding 3 < tau(v)/t(rh) < 3.5. We also conclude that the completely mass segregated clusters, even with binaries, are more compatible with the present-day ONC than the non-segregated ones.

Název v anglickém jazyce

Primordial mass segregation of star clusters: The role of binary stars

Popis výsledku anglicky

Observational results of young star-forming regions suggest that star clusters are completely mass segregated at birth. As a star cluster evolves dynamically, these initial conditions are gradually lost. For star clusters with single stars only and a canonical IMF, it has been suggested that traces of these initial conditions vanish at tau(v) between 3 and 3.5 half-mass relaxation times. Here, by means of numerical models, we investigate the role of the primordial binary population on the loss of primordial mass segregation. We found that tau(v) does not depend on the binary star distribution, yielding 3 < tau(v)/t(rh) < 3.5. We also conclude that the completely mass segregated clusters, even with binaries, are more compatible with the present-day ONC than the non-segregated ones.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GC19-01137J" target="_blank" >GC19-01137J: Největší černé díry na obloze: vznik a vývoj struktur na škálách horizontu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Contributions of the Astronomical Observatory Skalnate Pleso

ISSN

1336-0337

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

456-460

Kód UT WoS článku

000523574300017

EID výsledku v databázi Scopus

2-s2.0-85087059396