Results 151 to 160 of about 64,814 (288)

No evidence for feedback: Unexceptional Low-ionization winds in Host galaxies of Low Luminosity Active Galactic Nuclei at Redshift z ~1

open access: yes, 2017
We study winds in 12 X-ray AGN host galaxies at z ~ 1. We find, using the low-ionization Fe II 2586 absorption in the stacked spectra, that the probability distribution function (PDF) of the centroid velocity shift in AGN has a median, 16th and 84th ...
Coil, Alison L.   +8 more
core   +2 more sources

First Light and Reionization Epoch Simulations (FLARES) -- XV: The physical properties of super-massive black holes and their impact on galaxies in the early universe

open access: yesThe Open Journal of Astrophysics
Understanding the co-evolution of super-massive black holes (SMBHs) and their host galaxies remains a key challenge of extragalactic astrophysics, particularly the earliest stages at high-redshift.
Stephen Wilkins   +11 more
doaj   +1 more source

The bulk of the black hole growth since z ~ 1 occurs in a secular universe: no major merger-AGN connection [PDF]

open access: yes, 2011
What is the relevance of major mergers and interactions as triggering mechanisms for active galactic nuclei (AGNs) activity? To answer this long-standing question, we analyze 140 XMM-Newton-selected AGN host galaxies and a matched control sample of ...
Andrae, René   +23 more
core  

The role of active galactic nuclei in galaxy formation

open access: yes, 2009
We use Monte-Carlo Markov chain techniques to constrain acceptable parameter regions for the Munich L-Galaxies semi-analytic galaxy formation model.
Henriques, B. M., Thomas, P. A.
core   +1 more source

Active Galactic Nuclei Selection and Demographics: A New Age with JWST/MIRI

open access: yesThe Astrophysical Journal
Understanding the coevolution of supermassive black holes and their host systems requires a comprehensive census of active galactic nuclei (AGNs) behavior across a wide range of redshift, luminosity, obscuration level, and galaxy properties.
Jianwei Lyu   +21 more
doaj   +1 more source

Dust-enshrouded AGNs Can Dominate Host-galaxy-scale Cold Dust Emission [PDF]

open access: bronze, 2021
Jed McKinney   +6 more
openalex   +1 more source

Fast Outflows and Luminous He ii Emission in Dwarf Galaxies with Active Galactic Nuclei (AGN)

open access: yesThe Astrophysical Journal
While stellar processes are believed to be the main source of feedback in dwarf galaxies, the accumulating discoveries of active galactic nuclei (AGN) in dwarf galaxies over recent years arouse the interest to also consider AGN feedback in them.
Weizhe Liu   +8 more
doaj   +1 more source

Host galaxies of binary AGN [PDF]

open access: yesProceedings of Nuclei of Seyfert galaxies and QSOs - Central engine & conditions of star formation — PoS(Seyfert 2012), 2013
Carolin Villforth, Fred Hamann
openaire   +1 more source

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