Structural decomposition of merger-free galaxies hosting
luminous AGNs

J 2025

Structural decomposition of merger-free galaxies hosting luminous AGNs

FAHEY, Matthew J.; Isobelle Lilian Mary GARLAND; Brooke D. SIMMONS; William C. KEEL; Jesse SHANAHAN et al.

Základní údaje

Originální název

Structural decomposition of merger-free galaxies hosting luminous AGNs

Autoři

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2025, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.800 v roce 2024

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

galaxies: active; galaxies: bulges; galaxies: evolution; galaxies: spiral; galaxies: structure

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 12. 3. 2025 14:29, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

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.

Návaznosti

GM24-10599M, projekt VaV

Název: Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami

Investor: Grantová agentura ČR, Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami

Citovat

FAHEY, Matthew J.; Isobelle Lilian Mary GARLAND; Brooke D. SIMMONS; William C. KEEL; Jesse SHANAHAN; Alison COIL; Eilat GLIKMAN; Chris J. LINTOTT; Karen L. MASTERS; Ed MORAN; Rebecca J. SMETHURST; Tobias GERON a Matthew R. THORNE. Structural decomposition of merger-free galaxies hosting luminous AGNs. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2025, roč. 537, č. 4, s. 3511-3524. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/staf239.

@article{2483457,
   author = {Fahey, Matthew J. and Garland, Isobelle Lilian Mary and Simmons, Brooke D. and Keel, William C. and Shanahan, Jesse and Coil, Alison and Glikman, Eilat and Lintott, Chris J. and Masters, Karen L. and Moran, Ed and Smethurst, Rebecca J. and Geron, Tobias and Thorne, Matthew R.},
   article_number = {4},
   doi = {https://doi.org/10.1093/mnras/staf239},
   keywords = {galaxies: active; galaxies: bulges; galaxies: evolution; galaxies: spiral; galaxies: structure},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Structural decomposition of merger-free galaxies hosting luminous AGNs},
   url = {https://doi.org/10.1093/mnras/staf239},
   volume = {537},
   year = {2025}
}

TY  - JOUR
ID  - 2483457
AU  - Fahey, Matthew J. - Garland, Isobelle Lilian Mary - Simmons, Brooke D. - Keel, William C. - Shanahan, Jesse - Coil, Alison - Glikman, Eilat - Lintott, Chris J. - Masters, Karen L. - Moran, Ed - Smethurst, Rebecca J. - Geron, Tobias - Thorne, Matthew R.
PY  - 2025
TI  - Structural decomposition of merger-free galaxies hosting luminous AGNs
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 537
IS  - 4
SP  - 3511-3524
EP  - 3511-3524
PB  - Oxford University Press
SN  - 00358711
KW  - galaxies: active
KW  - galaxies: bulges
KW  - galaxies: evolution
KW  - galaxies: spiral
KW  - galaxies: structure
UR  - https://doi.org/10.1093/mnras/staf239
N2  - 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.
ER  -

FAHEY, Matthew J.; Isobelle Lilian Mary GARLAND; Brooke D. SIMMONS; William C. KEEL; Jesse SHANAHAN; Alison COIL; Eilat GLIKMAN; Chris J. LINTOTT; Karen L. MASTERS; Ed MORAN; Rebecca J. SMETHURST; Tobias GERON a Matthew R. THORNE. Structural decomposition of merger-free galaxies hosting luminous AGNs. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2025, roč.~537, č.~4, s.~3511-3524. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/staf239.

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