Results 91 to 100 of about 31,213 (262)

AGN-host galaxy connection: multiwavelength study [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractThe connection between active galactic nuclei (AGN) and their hosts showed to be important for understanding the formation and evolution of active galaxies. Using X–ray and deep optical data, we study how morphology and colours are related to X–ray properties at redshifts z≤2.0 for a sample of > 300 X–ray detected AGN in the Subaru/XMM ...
M. Pović, M. Sánchez-Portal, A. M. Pérez García, A. Bongiovanni, J. Cepa   +4 more
openaire   +1 more source

A Radio View of the Sky: the Cosmic History of Star-Forming and AGN Galaxies [PDF]

, 2009
We explore the cosmic evolution of radio detected star forming (SF) galaxies and active galactic nuclei (AGN), drawn from the VLA-COSMOS survey, out to z = 1.3.
Schinnerer, E., Smolčić, V., Zamorani, G.   +2 more
core  

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

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

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

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

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

Decomposition of AGN host galaxy images

, 2004
We describe an algorithm to decompose deep images of Active Galactic Nuclei into host galaxy and nuclear components. Currently supported are three galaxy models: A de-Vaucouleurs spheroidal, an exponential disc, and a two-component disc+bulge model. Key features of the method are: (semi-)analytic representation of a possibly spatially variable point ...
Kuhlbrodt, B., Wisotzki, L., Jahnke, K.
openaire   +2 more sources

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

, 2020
Krista Lynne Smith, Michael Koss, R. F. Mushotzky, O. Ivy Wong, Thomas Shimizu, Cláudio Ricci, F. Ricci   +6 more
openalex   +1 more source

AGN Host Galaxy Morphologies in COSMOS

, 2008
We use HST/ACS images and a photometric catalog of the COSMOS field to analyze morphologies of the host galaxies of approximately 400 AGN candidates at redshifts 0.3 < z < 1.0. We compare the AGN hosts with a sample of non-active galaxies drawn from the COSMOS field to match the magnitude and redshift distribution of the AGN hosts. We perform 2-D
Gabor, J. M., Impey, C. D., Jahnke, K., Simmons, B. D., Trump, J. R., Koekemoer, A. M., Brusa, M., Cappelluti, N., Schinnerer, E., Smolčić, V., Salvato, M., Rhodes, J. D., Mobasher, B., Capak, P., Massey, R., Leauthaud, A., Scoville, N.   +16 more
openaire   +2 more sources