Results 21 to 30 of about 64,814 (288)

The Role of Active Galactic Nucleus Winds in Galaxy Formation: Connecting AGN Outflows at Low Redshifts to the Formation/Evolution of Their Host Galaxies [PDF]

The Astronomical Journal
Using Sloan Digital Sky Survey (SDSS) spectra, we applied an automatic method to search for outflows (OFs) in three large samples of narrow-line active galactic nuclei (AGN) at low redshifts ( z < 0.4), separated into three spectral activity classes ...
Juan Pablo Torres-Papaqui, Roger Coziol, Aitor C. Robleto-Orús, Karla A. Cutiva-Alvarez, Paulina Roco-Avilez   +4 more
doaj   +2 more sources

Automatic Machine Learning Framework to Study Morphological Parameters of AGN Host Galaxies within z < 1.4 in the Hyper Supreme-Cam Wide Survey [PDF]

The Astrophysical Journal
We present a composite machine learning framework to estimate posterior probability distributions of bulge-to-total light ratio, half-light radius, and flux for active galactic nucleus (AGN) host galaxies within z  
Chuan Tian, C. Megan Urry, Aritra Ghosh, Daisuke Nagai, Tonima T. Ananna, Meredith C. Powell, Connor Auge, Aayush Mishra, David B. Sanders, Nico Cappelluti, Kevin Schawinski   +10 more
doaj   +3 more sources

Modeling Star Formation Histories of Changing-look AGN Host Galaxies with Prospector

The Astrophysical Journal
Changing-look active galactic nuclei (CL-AGNs), are AGNs that appear to transition between Seyfert Type 1 and 2 over periods of months to years. Several mechanisms to trigger these transitions have been proposed, but we have yet to conclusively determine
Margaret E. Verrico, K. Decker French, Katherine A. Suess, Tanay Agrawal, Lauranne Lanz, Yuanze Luo, Pallavi Patil, Kate Rowlands, Margaret Shepherd, Maya Skarbinski   +9 more
doaj   +2 more sources

The EDGE–CALIFA survey: central molecular gas depletion in AGN host galaxies – a smoking gun for quenching? [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2021
Feedback from an active galactic nucleus (AGN) is often implicated as a mechanism that leads to the quenching of galactic star formation. However, AGN-driven quenching is challenging to reconcile with observations that AGN hosts tend to harbour equal ...
S. Ellison, T. Wong, S. Sánchez, D. Colombo, A. Bolatto, J. Barrera-Ballesteros, R. García-Benito, V. Kalinova, Yufeng Luo, M. Rubio, S. Vogel   +10 more
semanticscholar   +1 more source

BASS XXXI: Outflow scaling relations in low redshift X-ray AGN host galaxies with MUSE [PDF]

, 2022
Ionised gas kinematics provide crucial evidence of the impact that active galactic nuclei (AGN) have in regulating star formation in their host galaxies.
D. Kakkad, E. Sani, A. Rojas, N. Mallmann, S. Veilleux, F. Bauer, F. Ricci, R. Mushotsky, M. Koss, C. Ricci, E. Treister, G. Privon, N. Nguyen, Rudolf Bar, F. Harrison, K. Oh, M. Powell, R. Riffel, D. Stern, B. Trakhtenbrot, C. M. Urry   +20 more
semanticscholar   +1 more source

Significant Suppression of Star Formation in Radio-quiet AGN Host Galaxies with Kiloparsec-scale Radio Structures [PDF]

Astrophysical Journal, 2020
We conducted 22 GHz 1″ Jansky Very Large Array imaging of 100 radio-quiet X-ray-selected active galactic nuclei (AGN) from the Swift–Burst Array Telescope (Swift–BAT) survey.
K. Smith, M. Koss, R. Mushotzky, O. I. Wong, T. Shimizu, C. Ricci, F. Ricci   +6 more
semanticscholar   +1 more source

SUPER-II: Spatially resolved ionized gas kinematics and scaling relations in z~2 AGN host galaxies [PDF]

, 2020
The SINFONI survey for Unveiling the Physics and Effect of Radiative feedback (SUPER) aims at tracing and characterizing ionized gas outflows and their impact on star formation in a statistical sample of X-ray selected Active Galactic Nuclei (AGN) at z ...
D. Kakkad, V. Mainieri, G. Vietri, S. Carniani, C. Harrison, M. Perna, J. Scholtz, C. Circosta, G. Cresci, B. Husemann, M. Bischetti, C. Feruglio, F. Fiore, A. Marconi, P. Padovani, M. Brusa, C. Cicone, A. Comastri, G. Lanzuisi, F. Mannucci, N. Menci, H. Netzer, E. Piconcelli, A. Puglisi, M. Salvato, M. Schramm, J. Silverman, C. Vignali, G. Zamorani, L. Zappacosta   +29 more
semanticscholar   +1 more source

Decomposition of the central structure of NGC 2273 in the NIR: A case study

Astronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract The Seyfert 2 galaxy NGC 2273 is a prime target to explore how active nuclei can be fed. It has a star‐forming innermost nuclear ring with a radius of 0.33kpc from where material may be funneled to the supermassive black hole in its center. In this article, we discuss high‐resolution adaptive optics aided JHKs images of NGC 2273 taken with the
L. Schey, J. Heidt, A. Pramskiy, D. Thompson, G. Agapito, S. Esposito, R. Gredel, D. Miller, E. Pinna, A. Puglisi, F. Rossi, W. Seifert, G. Taylor, A. Quirrenbach   +13 more
wiley   +1 more source

Unraveling the enigmatic soft x‐ray excess: Current understanding and future perspectives

Astronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023
Abstract This article explores various theoretical models proposed to explain the soft x‐ray excess phenomenon, including warm Comptonization, ionized reflection models, and ionized outflowing disc winds. The soft x‐ray excess is better understood thanks to crucial observations made by ROSAT, XMM‐Newton, and eROSITA.
Thomas Boller
wiley   +1 more source

Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO

Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023
Abstract We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modeling of OJ 287) covers wavelengths from the radio to the high‐energy regime. A few selected observations are simultaneous with those of the Event Horizon Telescope (EHT).
S. Komossa, A. Kraus, D. Grupe, M.L. Parker, A. Gonzalez, L.C. Gallo, M.A. Gurwell, S. Laine, S. Yao, S. Chandra, L. Dey, J.L. Gómez, K. Hada, D. Haggard, A.R. Hollett, H. Jermak, S. Jorstad, T.P. Krichbaum, S. Markoff, C. McCall, J. Neilsen, M. Nowak   +21 more
wiley   +1 more source