Results 41 to 50 of about 698 (182)
The Astrophysical JournalIn this manuscript, clues are provided to support globally negative active galactic nuclei (AGN) feedback on star formation in the host galaxies of the local low-redshift Sloan Digital Sky Survey (SDSS) Type 2 AGN, based on the different dependence of ...
XueGuang Zhang
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The Evolution of AGN and Their Host Galaxies
, 2016 Active galaxies have been in the forefront of astronomic research since their first discovery, at least 50 years ago (e.g. Schmidt, 1963; Matthews & Sandage, 1963). The putative supermassive black hole (SMBH) at their center characterizes their properties and regulates the evolution of these objects.
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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 +5 more
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The Kiloparsec-scale Influence of the AGN in NGC 1068 with SALT RSS Fabry–Pérot Spectroscopy
The Astronomical Journal, 2023 We present Fabry–Pérot (FP) imaging and longslit spectroscopy of the nearby Seyfert II galaxy NGC 1068 using the Robert Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT) to observe the impact of the central active galactic nucleus (
Raphael E. Hviding +4 more
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The Interplay between Radio AGN Activity and Their Host Galaxies
Galaxies, 2023 Radio activity in AGN (Active Galactic Nuclei) produce feedback on the host galaxy via the impact of the relativistic jets on the circumnuclear gas. Although radio jets can reach up to several times the optical radius of the host galaxy, in this review we focus on the observation of the feedback deposited locally in the central region of the host ...
Guilherme S. Couto +1 more
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$z\sim2$ dual AGN host galaxies are disky: stellar kinematics in the ASTRID Simulation
The Open Journal of AstrophysicsWe study dual AGN host galaxy morphologies at $z=2$ using the ASTRID simulation, selecting black hole (BH) pairs with small separation ($\Delta r10^7M_\odot$), and luminosity ($L_{\text{bol,12}}>10^{43}\rm{erg/s}$).
Ekaterine Dadiani +8 more
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Black hole mass, host galaxy mass, and dark matter halos: Testing the environmental connection
Astronomy & AstrophysicsWe investigate the relation between supermassive black holes (SMBHs), their host galaxies, and large-scale dark-matter halos by combining broad-line X-ray active galactic nuclei (AGNs) from the XMM–XXL and Stripe 82X surveys with galaxies from VIPERS and
Mountrichas G. +3 more
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Looking for Signatures of AGN Feedback in Radio-Quiet AGN
Galaxies, 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
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The Astrophysical Journal Letters, 2023 We study the properties of galaxies hosting mid-infrared outbursts in the context of a catalog of 500,000 galaxies from the Sloan Digital Sky Survey. We find that nuclear obscuration, as inferred by the surrounding dust mass, does not correlate with host
Sierra A. Dodd +7 more
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The Astrophysical JournalWe investigate the stellar shape and size–mass relationship of X-ray-selected active galactic nucleus (AGN) host galaxies using the high angular resolution and deep sensitivity in the near-infrared of the COSMOS-Web JWST survey field. We present the rest-
Bovornpratch Vijarnwannaluk +21 more
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