Results 101 to 110 of about 31,576 (269)

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  

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

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

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

The Connection between Star-Forming Galaxies, AGN Host Galaxies and Early-Type Galaxies in the SDSS

, 2007
We present a study of the connection between star-forming galaxies, AGN host galaxies, and normal early-type galaxies in the Sloan Digital Sky Survey (SDSS).
Busarello G., Changbom Park, Groves B., Ho Seong Hwang, Joon Hyeop Lee, Jorgensen I., Kewley L. J., Myung Gyoon Lee, Taehyun Kim, Yun-Young Choi   +9 more
core   +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

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

Atomic Hydrogen Properties of AGN Host Galaxies: HI in 16 NUclei of GAlaxies (NUGA) Sources

, 2007
We present a comprehensive spectroscopic imaging survey of the distribution and kinematics of atomic hydrogen (HI) in 16 nearby spiral galaxies hosting low luminosity AGN, observed with high spectral and spatial resolution (resolution: ~20 arcsec, 5 km/s)
Begeman K. G., Boone F., Buta R. & Combes F., Carole G. Mundell, Combes F., Combes F., Efron Bradley, Eva Schinnerer, Francoise Combes, Friedli D. & Martinet L., García-Burillo S., García-Burillo S., Greisen E. W., Jogee S., Junqueira S. & Combes F., Laurikainen E. & Salo H., Mundell C. G., Mundell C. G., Netzer H. & Shields J. C., Santiago García-Burillo, Schwarz U. J., Sebastian Haan, Shostak G. S., van der Hulst J. M., Verley S., Vollmer B., Warner P. J.   +26 more
core   +3 more sources

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

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