Results 31 to 40 of about 1,281,453 (204)

AGN in dusty hosts: implications for galaxy evolution [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We present strong empirical evidence for a physical connection between the occurrence of a starburst (SB) and a luminous AGN phase. Drawing infrared (IR), X-ray, and optically selected samples from COSMOS, we find that the locus of type-2 AGN hosts in the optical colour-magnitude (U-V/V) and colour-colour (U-V/V-J) space significantly overlaps with ...
Symeonidis, M., Kartaltepe, J., Salvato, M., Bongiorno, A., Brusa, M., Page, M. J., Ilbert, O., Sanders, D., Wel, A.   +8 more
openaire   +6 more sources

Relation between AGN type and host galaxy properties [PDF]

Astronomy & Astrophysics, 2021
We use 3213 active galactic nuclei (AGNs) from the XMM-XXL northern field to investigate the relation of AGN type with host galaxy properties. Applying a Bayesian method, we derive the hardness ratios, and through these the hydrogen column density (NH) for each source. We consider those with NH > 1021.5 cm−2 as absorbed sources (type 2).
Masoura, V. A., Mountrichas, George, Georgantopoulos, Ioannis, Plionis, Manolis   +3 more
openaire   +3 more sources

CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3

The Astrophysical Journal, 2023
We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to ...
Bren E. Backhaus, Joanna S. Bridge, Jonathan R. Trump, Nikko J. Cleri, Casey Papovich, Raymond C. Simons, Ivelina Momcheva, Benne W. Holwerda, Zhiyuan Ji, Intae Jung, Jasleen Matharu   +10 more
doaj   +1 more source

The Host Galaxies of AGN

, 2003
submitted to MNRAS, 44 pages, version with full resolution figures available at http://www.mpa-garching.mpg.de/~gamk/agnpaper/agnpaper ...
Kauffmann, Guinevere, Heckman, Timothy M., Tremonti, Christy, Brinchmann, Jarle, Charlot, Stephane, White, Simon D. M., Ridgway, Susan, Brinkmann, Jon, Fukugita, Masataka, Hall, Patrick, Ivezic, Zeljko, Richards, Gordon, Schneider, Donald   +12 more
openaire   +2 more sources

The impact of AGN on their host galaxies [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractIn these proceedings I briefly: (1) review the impact (or “feedback”) that active galactic nuclei (AGN) are predicted to have on their host galaxies and larger scale environment, (2) review the observational evidence for or against these predictions and (3) present new results on ionised outflows in AGN.
openaire   +2 more sources

The relationship between obscured AGN and their host galaxies [PDF]

, 2014
This thesis presents an investigation into obscured Active Galactic Nuclei (AGN) activity at high redshift and the interactions they share with their host galaxies.
Rangel, Cyprian
core   +1 more source

The impact of cosmic voids on AGN activity

Astronomy & Astrophysics
Aims. Our goal is to carry out a comparative study of the properties of central galaxies hosting active galactic nuclei (AGN) in cosmic voids and their surrounding structures (i.e.
Rouse Benedict L., Tissera Patricia B., Rosas-Guevara Yetli, Lagos Claudia del P.   +3 more
doaj   +1 more source

Towards a consistent framework of determining the active galactic nucleus contribution fraction and host galaxy properties

Astronomy & Astrophysics
Decomposing the contributions of active galactic nuclei (AGNs) from their host galaxies is essential for identifying AGN-dominated galaxies and accurately deriving key physical properties of both supermassive black holes (SMBHs) and their host galaxies ...
Chen Mi, Wang Lingyu, Margalef-Bentabol Berta, Małek Katarzyna, Laloux Brivael, La Marca Antonio   +5 more
doaj   +1 more source

AGN and Host Galaxies in the COSMOS Survey [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractThe Cosmological Evolution Survey (COSMOS) is a unique tool for studying low level AGN activity and the co-evolution of galaxies and supermassive black holes. COSMOS involves the largest contiguous region of the sky ever imaged by HST; it includes very complete multiwavelength coverage, and the largest joint samples of galaxy and AGN redshifts ...
Christopher D. Impey, Jonathan R. Trump, Jared M. Gabor   +2 more
openaire   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source