Results 161 to 170 of about 189,366 (258)

Narrow [O iii] Emission Lines as a Potential Proxy for the Evolutionary Stage of Quasars

The Astrophysical Journal
Radio spectral shape of quasars can provide insight into the ages of quasars. We have compiled data for 1804 quasars with z ≲ 1 from the Sloan Digital Sky Survey (SDSS).
Zhi-fu Chen, Zhe-Geng Chen, Xing-long Peng, Wei-rong Huang   +3 more
doaj   +1 more source

SPECTRAL ENERGY DISTRIBUTIONS OF LOW-LUMINOSITY RADIO GALAXIES ATz∼1-3: A HIGH-zVIEW OF THE HOST/AGN CONNECTION [PDF]

, 2012
R. D. Baldi, M. Chiaberge, A. Capetti, J. Rodriguez-Zaurín, Susana E. Deustua, W. B. Sparks   +5 more
openalex   +1 more source

Active Galactic Nuclei and Host Galaxies in COSMOS-Web. I. NIRCam Images, Point-spread-function Models and Initial Results on X-Ray-selected Broad-line AGNs at 0.35 ≲ z ≲ 3.5

The Astrophysical Journal
We present detailed and comprehensive data reduction and point-spread-function (PSF) model construction for all public JWST NIRCam imaging data from the COSMOS-Web treasury program (up to 2023 June, totaling 0.28 deg ^2 ). We show that the NIRCam PSF has
Ming-Yang Zhuang, Junyao Li, Yue Shen
doaj   +1 more source

Near-infrared photometry of isolated spirals with and without an AGN. II: Photometric properties of the host galaxies

, 2000
I. Márquez, F. Durret, J. Masegosa, M. Moles, R. M. González Delgado, Ignacio Marrero, J. Maza, E. Pérez, M. Roth   +8 more
openalex   +2 more sources

The nature of obscuration in AGN – I. Insights from host galaxies [PDF]

, 2013
Li Shao, Guinevere Kauffmann, Cheng Li, Jing Wang, Timothy M. Heckman   +4 more
openalex   +1 more source

The host galaxy of the z = 2.4 radio-loud AGN MRC 0406−244 as seen by HST [PDF]

, 2013
N. A. Hatch, H. J. A. Röttgering, G. K. Miley, E. E. Rigby, C. De Breuck, H. C. Ford, E. Kuiper, J. Kurk, Roderik Overzier, L. Pentericci   +9 more
openalex   +1 more source

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

What Are The Galaxies That Host Mir-Selected Agn?

, 2016
Infra-red selection techniques, sensitive to dust strongly heated by an AGN, offer a way to identify some of the most obscured accretion events in the Universe. I will describe the results of a comprehensive multi-wavelength study of AGN to z>2 selected using Spitzer/IRAC based methods in the COSMOS field.
openaire   +3 more sources

The relationship between obscured AGN and their host galaxies

, 2013
This thesis presents an investigation into obscured Active Galactic Nuclei (AGN) activity at high redshift and the interactions they share with their host galaxies. Using a combination of X-ray spectral fitting and X-ray stacking analyses, three studies are undertaken in this work.
openaire   +4 more sources

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