Results 51 to 60 of about 189,366 (258)

Looking for Signatures of AGN Feedback in Radio-Quiet AGN

open access: yesGalaxies, 2023
In this article, we discuss the state of “AGN feedback” in radio-quiet (RQ) AGN. This study involves heterogeneous samples of nearby Seyfert and LINER galaxies as well as quasi-stellar objects (QSOs) that have been observed at low radio frequencies (few ∼
Preeti Kharb, Sasikumar Silpa
doaj   +1 more source

The clustering of X-ray AGN at 0.5 < z < 4.5: host galaxies dictate dark matter halo mass [PDF]

open access: yes, 2020
We present evidence that AGN do not reside in ``special'' environments, but instead show large-scale clustering determined by the properties of their host galaxies. Our study is based on an angular cross-correlation analysis applied to X-ray selected AGN in the COSMOS and UDS fields, spanning redshifts from $z\sim4.5$ to $z\sim0.5$.
arxiv   +1 more source

Do Moderate-Luminosity Active Galactic Nuclei Suppress Star Formation? [PDF]

open access: yes, 2009
The growth of supermassive black holes and their host galaxies are thought to be linked, but the precise nature of this symbiotic relationship is still poorly understood. Both observations and simulations of galaxy formation suggest that the energy input
Adelman-McCarthy   +36 more
core   +3 more sources

Establishing the impact of powerful AGN on their host galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2019
AbstractEstablishing the role of active galactic nuclei (AGN) during the formation of galaxies remains one of the greatest challenges of galaxy formation theory. Towards addressing this, we summarise our recent work investigating: (1) the physical drivers of ionised outflows and (2) observational signatures of the impact by jets/outflows on star ...
C. M. Harrison   +3 more
openaire   +3 more sources

Spatially-resolved spectroscopy of narrow-line Seyfert 1 host galaxies [PDF]

open access: yes, 2017
We present optical integral field spectroscopy for five ...
Alessandro Collo   +6 more
core   +5 more sources

The environment of AGN dwarf galaxies at z$\sim$0.7 from the VIPERS survey [PDF]

open access: yes, 2022
Dwarf galaxies are ideal laboratories to study the relationship between the environment and AGN activity. However, the type of environments in which dwarf galaxies hosting AGN reside is still unclear and limited to low-redshift studies (z < 0.5). We use the VIMOS Public Extragalactic Redshift Survey (VIPERS) to investigate, for the first time, their ...
arxiv   +1 more source

Do Bars Trigger Activity in Galactic Nuclei?

open access: yes, 2012
We investigate the connection between the presence of bars and AGN activity, using a volume-limited sample of $\sim$9,000 late-type galaxies with axis ratio $b/a>0.6$ and $M_{r} < -19.5+5{\rm log}h$ at low redshift ($0.02\le z\lesssim 0.055$), selected ...
Hwang, Ho Seong   +6 more
core   +1 more source

The first 62 AGN observed with SDSS-IV MaNGA -- III: stellar and gas kinematics [PDF]

open access: yes, 2019
We investigate the effects of Active Galactic Nuclei (AGN) on the gas kinematics of their host galaxies, using MaNGA data for a sample of 62 AGN hosts and 109 control galaxies (inactive galaxies).
Bizyaev, Dmitry   +15 more
core   +2 more sources

A Catalog of AGN Host Galaxies Observed with HST/ACS: Correlations between Star Formation and AGN Activity [PDF]

open access: yes, 2019
We present the Advanced Camera for Surveys Active Galactic Nuclei (ACS-AGN) Catalog, a catalog of 2585 active galactic nucleus (AGN) host galaxies that are at redshifts 0.2
arxiv   +1 more source

Dust-Corrected Colors Reveal Bimodality in AGN Host Galaxy Colors at z~1

open access: yes, 2010
Using new, highly accurate photometric redshifts from the MUSYC medium-band survey in the Extended Chandra Deep Field South (ECDF-S), we fit synthetic stellar population models to compare AGN host galaxies to inactive galaxies at 0.8 < z < 1.2.
Brammer, Gabriel   +5 more
core   +1 more source

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