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FROST-CLUSTERS - III. Metallicity-dependent intermediate-mass black hole formation by runaway collisions in dense star clusters

We explore the formation of intermediate-mass black holes (IMBHs), potential seeds for supermassive black holes (SMBHs), via runaway stellar collisions for a wide range of star cluster (surface) densities ($4\times 10^3 \lesssim \Sigma _\mathrm{h} \lesssim 4\times 10^6 \, \mathrm{M_\odot \, pc^{-2}}...

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Autori principali: Rantala, Antti (Autore) , Naab, Thorsten (Autore) , Lahén, Natalia (Autore) , Reuter, Klaus (Autore) , Rampp, Markus (Autore) , Chruślińska, Martyna (Autore) , Reinoso, Bastián (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 27 May 2026
In: Monthly notices of the Royal Astronomical Society
Year: 2026, Volume: 549, Fascicolo: 4, Pages: 1-27
ISSN:1365-2966
DOI:10.1093/mnras/stag986
Accesso online:Verlag, kostenfrei, Volltext: https://doi.org/10.1093/mnras/stag986
Testo
Note sull'autore:Antti Rantala, Thorsten Naab, Natalia Lahén, Klaus Reuter, Markus Rampp, Martyna Chruślińska and Bastián Reinoso
Descrizione
Riassunto:We explore the formation of intermediate-mass black holes (IMBHs), potential seeds for supermassive black holes (SMBHs), via runaway stellar collisions for a wide range of star cluster (surface) densities ($4\times 10^3 \lesssim \Sigma _\mathrm{h} \lesssim 4\times 10^6 \, \mathrm{M_\odot \, pc^{-2}}$) and metallicities $(0.01 \lesssim Z \lesssim 1.0 \, \mathrm{Z_\odot })$. Our sample of isolated (>1400) and hierarchical (30) simulations of young, massive star clusters with up to $N=1.8\times 10^6$ stars includes collisional stellar dynamics, stellar evolution, and post-Newtonian equations of motion for black holes using the bifrost code. High stellar wind rates suppress IMBH formation at high metallicities
Descrizione del documento:Gesehen am 18.09.2026
Descrizione fisica:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/stag986

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