Results 51 to 60 of about 141,201 (236)

Morphologies of low-redshift AGN host galaxies: what role does AGN luminosity play?

, 2013
Mergers of galaxies have been suspected to be a major trigger of AGN activity for many years. However, when compared to carefully matched control samples, AGN host galaxies often show no enhanced signs of interaction.
Chang, YuYen, collaboration, CANDELS, Guo, Yicheng, Hamann, Fred, Hamilton, Timothy, Koekemoer, Anton, McGrath, Elizabeth J., Rosario, David, van der Wel, Arjen, Villforth, Carolin   +9 more
core  

Consequences of Mechanical and Radiative Feedback from Black Holes in Disc Galaxy Mergers

, 2014
We study the effect of AGN mechanical and radiation feedback on the formation of bulge dominated galaxies via mergers of disc galaxies. The merging galaxies have mass-ratios of 1:1 to 6:1 and include pre-existing hot gaseous halos to properly account for
Choi, Ena, Johansson, Peter H., Moster, Benjamin P., Naab, Thorsten, Ostriker, Jeremiah P.   +4 more
core   +1 more source

Low-luminosity AGN and Normal Galaxies [PDF]

, 2000
Low-luminosity AGN (with X-ray luminosity < 1e42 ergs/s) far outnumber ordinary AGN, and are therefore perhaps more relevant to our understanding of AGN phenomena and the relationship between AGN and host galaxies.
Ptak, A.
core   +3 more sources

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

The 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, Stacey Alberts, George H. Rieke, Irene Shivaei, Pablo G. Pérez-González, Fengwu Sun, Kevin N. Hainline, Stefi Baum, Nina Bonaventura, Andrew J. Bunker, Eiichi Egami, Daniel J. Eisenstein, Michael Florian, Zhiyuan Ji, Benjamin D. Johnson, Jane Morrison, Marcia Rieke, Brant Robertson, Wiphu Rujopakarn, Sandro Tacchella, Jan Scholtz, Christopher N. A. Willmer   +21 more
doaj   +1 more source

Agnes: o corpo feito imagem

O Eixo e a Roda: Revista de Literatura Brasileira, 1984
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openaire   +2 more sources

Evidence of Feedback Effects in Low-luminosity Active Galactic Nuclei Revealed by JWST Spectroscopy

The Astrophysical Journal Letters
This Letter presents an analysis of the infrared (∼3–28 μ m) spectra extracted from the nuclear ( r  
Lulu Zhang, Chris Packham, Erin K. S. Hicks, Ric I. Davies, Daniel E. Delaney, Francoise Combes, Miguel Pereira-Santaella, Almudena Alonso-Herrero, Claudio Ricci, Omaira González-Martín, Laura Hermosa Muñoz, Ismael García-Bernete, Cristina Ramos Almeida, Dimitra Rigopoulou, Fergus R. Donnan, Enrica Bellocchi, Nancy A. Levenson, Martin J. Ward, Santiago García-Burillo, Sebastian F. Hoenig   +19 more
doaj   +1 more source

X-ray bright active galactic nuclei in massive galaxy clusters III: New insights into the triggering mechanisms of cluster AGN

, 2014
We present the results of a new analysis of the X-ray selected Active Galactic Nuclei (AGN) population in the vicinity of 135 of the most massive galaxy clusters in the redshift range of 0.2 < z < 0.9 observed with Chandra.
Allen, S. W., Brandt, W. N., Canning, R. E. A., Ehlert, S., Luo, B., Mantz, A., Morris, R. G., von der Linden, A., Xue, Y. Q.   +8 more
core   +1 more source

Mapping AGN winds: A connection between radio-mode AGNs and the AGN feedback cycle

Astronomy & Astrophysics
We present a kinematic analysis based on the large integral field spectroscopy (IFS) dataset of SDSS-IV MaNGA (Sloan Digital Sky Survey/Mapping Nearby Galaxies at Apache Point Observatory; ∼10 000 galaxies). We have compiled a diverse sample of 594 unique active galactic nuclei (AGNs), identified through a variety of independent selection techniques ...
M. Albán, D. Wylezalek, J. M. Comerford, J. E. Greene, R. A. Riffel   +4 more
openaire   +2 more sources

Galaxies Lighting Up: Discovery of Seventy New Turn-on Changing-look Active Galactic Nuclei

The Astrophysical Journal
“Changing-look active galactic nuclei” (CL AGN) show dramatic, rapid changes in optical/UV continuum and broad-line emission. The majority of CL AGN have been found dimming as “turn-off” CL AGN because most selection methods start from samples of ...
Qian Yang, Paul J. Green, Xue-Bing Wu, Michael Eracleous, Linhua Jiang, Yuming Fu   +5 more
doaj   +1 more source

NoSOCS in SDSS. VI. The Environmental Dependence of AGN in Clusters and Field in the Local Universe

, 2017
We investigated the variation in the fraction of optical active galactic nuclei (AGN) hosts with stellar mass, as well as their local and global environments.
Lopes, P. A. A., Rembold, S. B., Ribeiro, A. L. B.   +2 more
core   +2 more sources