Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10509919" target="_blank" >RIV/00216208:11320/25:10509919 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bdXUOVAFO4" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bdXUOVAFO4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staf941" target="_blank" >10.1093/mnras/staf941</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster?

Popis výsledku v původním jazyce

Using direct N-body simulations, we investigate the initial conditions and evolution of a star-forming region resembling the Orion Nebula Cluster (ONC) with the advanced nbody6 code. By varying the initial conditions, we aim to identify a model that closely aligns with observed parameters such as the half-mass radius, core radius, and total mass. Additionally, we examine the cluster&apos;s evolution over 800 Myr to determine whether it could reproduce the present-day properties of the Pleiades and Hyades along its evolutionary path. Under the influence of a Milky Way-like tidal field, the ONC experiences significant mass loss, primarily due to rapid gas expulsion, retaining approximately 47 per cent of its initial 4200 stars by about 100 Myr and only 9 per cent by about 700 Myr. These evolutionary stages closely match the properties of the Pleiades and Hyades, suggesting that an ONC-like cluster may have been their precursor. Additional models with varying degrees of primordial mass segregation indicate that the ONC likely had an initial half-mass radius of 0.2-0.3 pc, a total mass of 1200-2000 M-circle dot, and a high degree of mass segregation. Models with an initial stellar count of about N-in approximate to 4 x 10(3)- 5 x 10(3), rich in binaries and exhibiting mass segregation, show excellent agreement with observed cluster properties.

Název v anglickém jazyce

Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster?

Popis výsledku anglicky

Using direct N-body simulations, we investigate the initial conditions and evolution of a star-forming region resembling the Orion Nebula Cluster (ONC) with the advanced nbody6 code. By varying the initial conditions, we aim to identify a model that closely aligns with observed parameters such as the half-mass radius, core radius, and total mass. Additionally, we examine the cluster&apos;s evolution over 800 Myr to determine whether it could reproduce the present-day properties of the Pleiades and Hyades along its evolutionary path. Under the influence of a Milky Way-like tidal field, the ONC experiences significant mass loss, primarily due to rapid gas expulsion, retaining approximately 47 per cent of its initial 4200 stars by about 100 Myr and only 9 per cent by about 700 Myr. These evolutionary stages closely match the properties of the Pleiades and Hyades, suggesting that an ONC-like cluster may have been their precursor. Additional models with varying degrees of primordial mass segregation indicate that the ONC likely had an initial half-mass radius of 0.2-0.3 pc, a total mass of 1200-2000 M-circle dot, and a high degree of mass segregation. Models with an initial stellar count of about N-in approximate to 4 x 10(3)- 5 x 10(3), rich in binaries and exhibiting mass segregation, show excellent agreement with observed cluster properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

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

1365-2966

Svazek periodika

541

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

1753-1762

Kód UT WoS článku

001530929600001

EID výsledku v databázi Scopus

2-s2.0-105011477727