Results 91 to 100 of about 31,838 (235)

The Morphology of Dwarf Galaxies Hosting Variable Active Galactic Nuclei

The Astrophysical Journal
We analyze Hubble Space Telescope optical imaging of eight low-mass galaxies hosting active galactic nuclei (AGN) identified via their photometric variability in V. F. Baldassare et al.
Erin Kimbro, Vivienne Baldassare, Guy Worthey, Marla Geha, Jenny Greene   +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

On the relation of host properties and environment of AGN galaxies across the standard optical diagnostic diagram [PDF]

, 2022
Noelia Pérez, Georgina Coldwell
openalex   +1 more source

Active Dwarf Galaxy Database. I. Overlap between Active Galactic Nuclei Selected by Different Techniques

The Astrophysical Journal
We assemble a sample of 733 dwarf galaxies ( M _* ≤ 10 ^9.5 M _⊙ ) with signatures of active galactic nuclei (AGN) and explore the intersection between different AGN-selection techniques.
Erik J. Wasleske, Vivienne F. Baldassare
doaj   +1 more source

Statistics of the projected angles between the black-hole spin and the host-galaxy rotation axes from NewHorizon

Astronomy & Astrophysics
Understanding the alignment between active galactic nucleus (AGN) jets and their host galaxies is crucial for interpreting AGN unification models, jet feedback processes, and the coevolution of galaxies and their central black holes (BHs). In this study,
Peirani Sébastien, Suto Yasushi, Laigle Clotilde, Lin Yen-Ting, Dubois Yohan, Yi Sukyoung K.   +5 more
doaj   +1 more source

Host Galaxy Evolution in Radio-Loud AGN

, 2004
We investigate the luminosity evolution of the host galaxies of radio-loud AGN through Hubble Space Telescope imaging of 72 BL Lac objects, including new STIS imaging of nine z > 0.6 BL Lacs. With their intrinsically low accretion rates and their strongly beamed jets, BL Lacs provide a unique opportunity to probe host galaxy evolution independent of
O'Dowd, Matthew, Urry, C. Megan
openaire   +2 more sources

The Relation between AGN and Host-galaxy Properties in the JWST Era. I. Seyferts at Cosmic Noon are Obscured and Disturbed

The Astrophysical Journal
The morphology of a galaxy reflects the mix of physical processes occurring within and around it, offering indirect clues to its formation and evolution.
Nina Bonaventura, Jianwei Lyu, George H. Rieke, Stacey Alberts, Christopher N. A. Willmer, Pablo G. Pérez-González, Andrew J. Bunker, Meredith Stone, Francesco D’Eugenio, Christina C. Williams, Michael V. Maseda, Chris J. Willott, Zhiyuan Ji, William M. Baker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Daniel J. Eisenstein, Kevin Hainline, Ryan Hausen, Erica J. Nelson, Marcia J. Rieke, Brant Robertson, Irene Shivaei   +24 more
doaj   +1 more source

HST WFC3/IR Observations of Active Galactic Nucleus Host Galaxies at z~2: Supermassive Black Holes Grow in Disk Galaxies

, 2010
We present the rest-frame optical morphologies of active galactic nucleus (AGN) host galaxies at 1 ...
Bond, Cardamone, Cardamone, Constantin, Ferrarese, Francke, Gebhardt, Hinshaw, Hopkins, Hopkins, Häring, Jahnke, Koekemoer, Koekemoer, Koss, Kriek, Luo, Merloni, Peng, Peng, Schawinski, Schawinski, Schawinski, Sersic, Simmons, Treister, Treister, Trump, Ueda, Windhorst   +29 more
core   +1 more source

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

The Host Galaxies of Active Galactic Nuclei with Direct Black Hole Mass Measurements

The Astrophysical Journal
Reverberation mapping (RM) determines the mass of black holes (BHs) in active galactic nuclei (AGNs) by resolving the BH gravitational sphere of influence in the time domain.
Vardha N. Bennert, Nico Winkel, Tommaso Treu, Xuheng Ding, Vivian U, Raymond P. Remigio, Aaron J. Barth, Matthew A. Malkan, Lizvette Villafaña, Samantha Allen, Ellie Johnson, Sebastian Contreras, Minjin Kim, Simon Birrer, Knud Jahnke, Shaoping Zheng   +15 more
doaj   +1 more source