JWST plus ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F25%3A00646715" target="_blank" >RIV/67985815:90106/25:00646715 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202553668" target="_blank" >https://doi.org/10.1051/0004-6361/202553668</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202553668" target="_blank" >10.1051/0004-6361/202553668</a>
Alternative languages
Result language
angličtina
Original language name
JWST plus ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN
Original language description
Mergers play important roles in galaxy evolution at and beyond cosmic noon (z similar to 3). They have been found to be a trigger of active galactic nuclei (AGN) activity and a process for growing stellar mass and black hole mass. High-z radio galaxies (HzRGs = type-2 radio-loud AGN) are among the most massive galaxies known, and they reside in dense environments on scales of tens of kiloparsecs to Megaparsecs. We present the first search for kiloparsec-scale companions using matched 0.2 '' resolution ALMA and JWST/NIRSpec integral field unit data in a sample of four z similar to 3.5 HzRGs with many supporting datasets. We discovered a total of similar to 12 companion systems within less than or similar to 18 kpc across all four HzRG fields using two independent detection methods: peculiar [O III]4959, 5007 kinematics offset from the main (systemic) ionized gas component and [C II]158 mu m emitters. We examined the velocity fields of these companions and find evidence of disk rotation along with more complex motions. We estimate the dynamical masses of these nearby systems to be M-dyn similar to 10(9 11) M-circle dot, which may indicate a minor merger scenario. Our results indicate that these companions may be the trigger of the powerful radio-loud AGN. We discuss the roles of the discovered companion systems in galaxy evolution for these powerful jetted AGN and indicate that they may impede jet launch and deflect the jet.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
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Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
696
Issue of the periodical within the volume
Apr.
Country of publishing house
FR - FRANCE
Number of pages
26
Pages from-to
A88
UT code for WoS article
001468811000026
EID of the result in the Scopus database
2-s2.0-105002656461