Results 131 to 140 of about 64,814 (288)

Star formation characteristics of galaxies hosting AGN

, 2023
We present an analysis of the ultra-violet (UV) observations of two Seyfert type active galactic nuclei (AGN), namely NGC$~$4051 and NGC$~$4151. These observations aimed at studying the star formation in the hosts of these AGN were carried out with the ultra-violet imaging telescope on board AstroSat in far-UV.
Nandi, Payel, Stalin, C. S.
openaire   +2 more sources

Quantifying the Active Galactic Nucleus Fraction in Cosmic Voids via Mid-infrared Variability

The Astrophysical Journal
Observations and theoretical simulations suggest that the large-scale environment plays a significant role in how galaxies form and evolve and, in particular, whether and when galaxies host an actively accreting supermassive black hole in their center (i.
Anish S. Aradhey, Anca Constantin, Michael S. Vogeley, Kelly A. Douglass   +3 more
doaj   +1 more source

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

, 2017
We present optical integral field spectroscopy for five ...
Alessandro Collo, Debora Fedele, Erika Pistone, Federica Barutta, Gabriella Gruden, Graziella Bruno, Virginia Bicchiega   +6 more
core   +5 more sources

Discrepancies between JWST Observations and Simulations of Quenched Massive Galaxies at z > 3: A Comparative Study with IllustrisTNG and ASTRID

The Astrophysical Journal
Recent JWST observations have uncovered an unexpectedly large population of massive quiescent galaxies at z  > 3. Using the cosmological simulations IllustrisTNG and ASTRID , we identify analogous galaxies and investigate their abundance, formation ...
Emma Jane Weller, Fabio Pacucci, Yueying Ni, Lars Hernquist, Minjung Park   +4 more
doaj   +1 more source

PEARLS: Discovery of Point-source Features within Galaxies in the North Ecliptic Pole Time Domain Field

The Astrophysical Journal
The first public 0.9–4.4 μ m NIRCam images of the North Ecliptic Pole Time Domain Field uncovered galaxies displaying point-source features in their cores as seen in the longer-wavelength filters. We visually identified a sample of 66 galaxies (∼1 galaxy
Rafael Ortiz III, Rogier A. Windhorst, Seth H. Cohen, Steven P. Willner, Rolf A. Jansen, Timothy Carleton, Patrick S. Kamieneski, Michael J. Rutkowski, Brent M. Smith, Jake Summers, Cheng Cheng, Dan Coe, Christopher J. Conselice, Jose M. Diego, Simon P. Driver, Jordan C. J. D’Silva, Brenda L. Frye, Hansung B. Gim, Norman A. Grogin, Heidi B. Hammel, Nimish P. Hathi, Benne W. Holwerda, Minhee Hyun, Myungshin Im, William C. Keel, Anton M. Koekemoer, Juno Li, Madeline A. Marshall, Tyler J. McCabe, Noah J. McLeod, Stefanie N. Milam, Rosalia O’Brien, Nor Pirzkal, Aaron S. G. Robotham, Russell E. Ryan Jr., Christopher N. A. Willmer, Haojing Yan, Min S. Yun, Adi Zitrin   +38 more
doaj   +1 more source

The host galaxy/AGN connection [PDF]

, 2007
A. Capetti, B. Balmaverde
openalex   +2 more sources

Deep Chandra Observations of NGC 5728. III. Probing the High-resolution X-Ray Morphology and Multiphase Interstellar Medium Interactions in the Circumnuclear Region

The Astrophysical Journal
We present a detailed imaging analysis of 260 ks of subarcsecond resolution Chandra (ACIS-S) observations of the nearby Seyfert 2 galaxy NGC 5728. Our study focuses on the bright and diffuse soft X-ray emission within the galaxy's inner ∼1 kpc.
Anna Trindade Falcão, G. Fabbiano, M. Elvis, A. Paggi, W. P. Maksym   +4 more
doaj   +1 more source

Multiwavelength perspective of AGN evolution

, 2010
Discovering and studying obscured AGN at z>1-3 is important not only to complete the AGN census, but also because they can pinpoint galaxies where nuclear accretion and star-formation are coeval, and mark the onset of AGN feedback.
Fiore, Fabrizio
core   +1 more source

Ongoing Star Formation In AGN Host Galaxy Disks: A View From Core-collapse Supernovae

, 2010
The normalized radial distribution of young stellar populations (and cold gas) in nearby galactic disks is compared between AGN host galaxies and starforming galaxies (both with Hubble types between S0/a and Scd) by using type II supernovae (SNe) as ...
Ammons, Athanassoula, Baldwin, Bartunov, Bournaud, Buta, Cid Fernandes, Ciroi, Croton, Di Matteo, Ferrarese, Gehrels, Gonzalez Delgado, Granato, Hakobyan, Hammer, Ho, Hopkins, Hopkins, Hopkins, Hunt, Hunt, J. S. Deng, J. Wang, J. Y. Wei, Kauffmann, Kauffmann, Kewley, Kewley, Magorrian, Mao, Martini, Petrosian, Petrosian, Prieto, Reichard, Sellwood, Shaw, Silverman, Smirnova, Springel, Tremaine, Tsvetkov, Ueda, Van Den Bergh, Veilleux, Wang, Wang, Wang, Wild, Woosley, Zheng, Zhou   +52 more
core   +1 more source

A New Approach to Constraining Properties of Active Galactic Nucleus Host Galaxies by Combining Image and Spectral Energy Distribution Decomposition: Testing upon the MBH–M⋆ Relation

The Astrophysical Journal
The outshining light from active galactic nuclei (AGNs) poses significant challenges in studying the properties of AGN host galaxies. To address this issue, we propose a novel approach that combines image decomposition and spectral energy distribution ...
Haoran Yu, Lulu Fan, Yunkun Han, Weibin Sun, Yihang Zhang, Xuheng Ding, Yongquan Xue   +6 more
doaj   +1 more source