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Environmental dependence of AGN activity and star formation in galaxy clusters from Magneticum simulations
ID
Rihtaršič, Gregor
(
Avtor
),
ID
Biffi, Veronica
(
Avtor
),
ID
Fabjan, Dunja
(
Avtor
),
ID
Dolag, Klaus
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(703,68 KB)
MD5: EC101015A34F5E903EFB47146CC1DCD3
URL - Izvorni URL, za dostop obiščite
https://www.aanda.org/articles/aa/full_html/2024/03/aa47444-23/aa47444-23.html
Galerija slik
Izvleček
Context. The environment inside and on the outskirts of galaxy clusters has a profound impact on the star formation rate and active galactic nucleus (AGN) activity in cluster galaxies. While the overall star formation and AGN suppression in the inner cluster regions has been thoroughly studied in the past, recent X-ray studies also indicate that conditions on the cluster outskirts may promote AGN activity. Aims. We investigate how the environment and the properties of host galaxies impact the levels of AGN activity and star formation in galaxy clusters. We aim to identify significant trends in different galaxy populations and suggest possible explanations. Methods. We studied galaxies with stellar mass log $M_∗(M_⊙)$ > 10.15 in galaxy clusters with mass $M_{500}$ > 10$^{13}$ $M_⊙$ extracted from box2b (640 comoving Mpc $h^{−1}$) of the Magneticum Pathfinder suite of cosmological hydrodynamical simulations at redshifts 0.25 and 0.90. We examined the influence of stellar mass, distance to the nearest neighbouring galaxy, cluster-centric radius, substructure membership, and large-scale surroundings on the fraction of galaxies hosting an AGN, star formation rate, and the ratio between star-forming and quiescent galaxies. Results. We find that in low-mass galaxies, AGN activity and star formation are similarly affected by the environment and decline towards the cluster centre. In massive galaxies, the impact is different; star-formation level increases in the inner regions and peaks between 0.5 and 1 $R_{500}$ with a rapid decline in the centre, whereas AGN activity declines in the inner regions and rapidly rises below $R_{500}$ towards the centre. We suggest that this increase is a result of the larger black hole masses relative to stellar masses in the cluster centre. After disentangling the contributions of neighbouring cluster regions, we find an excess of AGN activity in massive galaxies on the cluster outskirts (∼3 $R_{500}$). We also find that the local density, substructure membership, and stellar mass strongly influence star formation and AGN activity but verify that they cannot fully account for the observed radial trends.
Jezik:
Angleški jezik
Ključne besede:
active galaxies
,
star formation
,
active galactic nuclei
,
numerical methods
,
galaxy clusters
,
galaxy interactions
,
galaxies
,
large-scale structure of Universe
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FMF - Fakulteta za matematiko in fiziko
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2024
Št. strani:
14 str.
Številčenje:
Vol. 683, art. A57
PID:
20.500.12556/RUL-154870
UDK:
524.6
ISSN pri članku:
1432-0746
DOI:
10.1051/0004-6361/202347444
COBISS.SI-ID:
187927811
Datum objave v RUL:
06.03.2024
Število ogledov:
491
Število prenosov:
67
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Objavi na:
Gradivo je del revije
Naslov:
Astronomy & astrophysics
Skrajšan naslov:
Astron. astrophys.
Založnik:
EDP Sciences
ISSN:
1432-0746
COBISS.SI-ID:
392577
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Public Scholarship, Development, Disability and Maintenance Fund of the Republic of Slovenia, Ad futura
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
N1-0238
Naslov:
Raziskave kozmične zore z James Webb vesoljskim teleskopom
Financer:
EC - European Commission
Program financ.:
H2020
Številka projekta:
860744
Naslov:
Big Data applications for Black hole Evolution STudies
Akronim:
BiD4BEST
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Deutsche Forschungsgemeinschaft
Številka projekta:
415510302
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Deutsche Forschungsgemeinschaft, Germany’s Excellence Strategy
Številka projekta:
EXC 2094
Akronim:
Excellence Cluster ORIGINS
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Deutsche Forschungsgemeinschaft, Germany’s Excellence Strategy
Številka projekta:
390783311
Akronim:
Excellence Cluster ORIGINS
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P1-0188
Naslov:
Astrofizika in fizika atmosfere
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Leibniz Supercomputer Center (LRZ)
Številka projekta:
pr83li
Naslov:
Magneticum
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