Structural decomposition of merger-free galaxies hosting luminous AGNs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00144289" target="_blank" >RIV/00216224:14310/25:00144289 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/mnras/staf239" target="_blank" >https://doi.org/10.1093/mnras/staf239</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staf239" target="_blank" >10.1093/mnras/staf239</a>

Result language

angličtina

Original language name

Structural decomposition of merger-free galaxies hosting luminous AGNs

Original language description

Active galactic nucleus (AGN) growth in disc-dominated, merger-free galaxies is poorly understood, largely due to the difficulty in disentangling the AGN emission from that of the host galaxy. By carefully separating this emission, we examine the differences between AGNs in galaxies hosting a (possibly) merger-grown, classical bulge, and AGNs in secularly grown, truly bulgeless disc galaxies. We use galfit to obtain robust, accurate morphologies of 100 disc-dominated galaxies imaged with the Hubble Space Telescope. Adopting an inclusive definition of classical bulges, we detect a classical bulge component in 53.3 +/- 0.5 per cent of the galaxies. These bulges were not visible in Sloan Digital Sky Survey photometry, however these galaxies are still unambiguously disc-dominated, with an average bulge-to-total luminosity ratio of 0.1 +/- 0.1. We find some correlation between bulge mass and black hole mass for disc-dominated galaxies, though this correlation is significantly weaker in comparison to the relation for bulge-dominated or elliptical galaxies. Furthermore, a significant fraction (greater than or similar to 90 per cent) of our black holes are overly massive when compared to b the relationship for elliptical galaxies. We find a weak correlation between total stellar mass and black hole mass for the disc-dominated galaxies, hinting that the stochasticity of black hole-galaxy co-evolution may be higher in disc-dominated than bulge-dominated systems.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GM24-10599M" target="_blank" >GM24-10599M: Stars in galactic nuclei: interrelation with massive black holes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

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

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

537

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

3511-3524

UT code for WoS article

001427964200001

EID of the result in the Scopus database

2-s2.0-85218447266