JWST plus ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

JWST plus ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

JWST plus ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

696

Číslo periodika v rámci svazku

Apr.

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

26

Strana od-do

A88

Kód UT WoS článku

001468811000026

EID výsledku v databázi Scopus

2-s2.0-105002656461