Results 101 to 110 of about 31,838 (235)

A Novel Method to Identify AGNs Based on Emission Line Excess and the Nature of Low-luminosity AGNs in the Sloan Digital Sky Survey: II - Nature of Low-luminosity AGNs

, 2012
We develop a novel method to identify active galactic nuclei (AGNs) and study the nature of low-luminosity AGNs in the Sloan Digital Sky Survey. This is the second part of a series of papers and we study the correlations between the AGN activities and ...
Tanaka, Masayuki
core   +1 more source

AGN and starburst coexistence in the short GRB100628A host galaxy [PDF]

, 2019
M. Contini
openalex   +1 more source

The Unusual AGN Host NGC 1266: Evidence for Shocks in a Molecular Gas Rich S0 Galaxy with a Low Luminosity Nucleus [PDF]

, 2022
Pei-Bin Chen, Yinghe Zhao, Junfeng Wang
openalex   +1 more source

Clustering, host galaxies, and evolution of AGN

, 2009
We explore the connection between different classes of active galactic nuclei (AGNs) and the evolution of their host galaxies, by deriving host galaxy properties, clustering, and Eddington ratios of AGNs selected in the radio, X-ray, and infrared (IR) wavebands from the wide-field (9 deg^2) Bootes survey.
Hickox, Ryan C., collaboration, the Bootes survey   +1 more
openaire   +2 more sources

Hubble Space Telescope Observations of Extended [O iii]λ 5007 Emission in Nearby QSO2s: New Constraints on AGN Host Galaxy Interaction [PDF]

, 2018
Travis C. Fischer, S. B. Kraemer, H. R. Schmitt, L. F. Longo Micchi, D. M. Crenshaw, M. Revalski, M. Vestergaard, M. Elvis, C. M. Gaskell, F. Hamann, L. C. Ho, J. Hutchings, R. Mushotzky, H. Netzer, T. Storchi-Bergmann, A. Straughn, T. J. Turner, M. J. Ward   +17 more
openalex   +3 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

Dust-Corrected Colors Reveal Bimodality in AGN Host Galaxy Colors at z~1

, 2010
Using new, highly accurate photometric redshifts from the MUSYC medium-band survey in the Extended Chandra Deep Field South (ECDF-S), we fit synthetic stellar population models to compare AGN host galaxies to inactive galaxies at 0.8 < z < 1.2.
Brammer, Gabriel, Cardamone, Carolin N., Gawiser, Eric, Schawinski, Kevin, Treister, Ezequiel, Urry, C. Megan   +5 more
core   +1 more source

A TALE OF TWO FEEDBACKS: STAR FORMATION IN THE HOST GALAXIES OF RADIO AGNs [PDF]

, 2014
Marios Karouzos, Myungshin Im, Markos Trichas, Tomo Goto, Matt Malkan, A. Ruiz, Yiseul Jeon, Ji Hoon Kim, Hyung Mok Lee, Seong Jin Kim, Nagisa Oi, Hideo Matsuhara, Toshinobu Takagi, K. L. Murata, Takehiko Wada, K. Wada, Hyunjin Shim, H. Hanami, S. Serjeant, G. J. White, Chris Pearson, Youichi Ohyama   +21 more
openalex   +1 more source

The bulk of the black hole growth since z ~ 1 occurs in a secular universe: no major merger-AGN connection [PDF]

, 2011
What is the relevance of major mergers and interactions as triggering mechanisms for active galactic nuclei (AGNs) activity? To answer this long-standing question, we analyze 140 XMM-Newton-selected AGN host galaxies and a matched control sample of ...
Andrae, René, Brusa, Marcella, Capak, Peter, Cappelluti, Nico, Cisternas, Mauricio, Civano, Francesca, Ilbert, Olivier, Impey, Chris D., Inskip, Katherine J., Jahnke, Knud, Kartaltepe, Jeyhan, Koekemoer, Anton M., Leauthaud, Alexie, Lilly, Simon J., Lisker, Thorsten, Lusso, Elisabeta, Miyaji, Takamitsu, Robaina, Aday R., Salvato, Mara, Scodeggio, Marco, Scoville, Nick Z., Sheth, Kartik, Taniguchi, Yoshi, Trump, Jonathan R.   +23 more
core  

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