Results 61 to 70 of about 698 (182)
Star Formation Characteristics of Galaxies Hosting AGN
Bulletin de la Société Royale des Sciences de LiègeWe present an analysis of the ultra-violet (UV) observations of two Seyfert type active galactic nuclei (AGN), namely NGC 4051 and NGC 4151. These observations aimed at studying the star formation in the hosts of these AGN were carried out with the ultra-violet imaging telescope on board AstroSat in far-UV.
Nandi, Payel, Stalin, C. S.
openaire +2 more sources
The Astrophysical JournalWe present new results from the ASTRID simulation from z = 3 to z = 0.5, covering the epoch of cosmic noon. The galaxy stellar mass function, as well as the black hole mass and luminosity functions in ASTRID , exhibit good agreement with recent ...
Yueying Ni +7 more
doaj +1 more source
The Astrophysical JournalA fundamental question in galaxy and black hole evolution remains how galaxies and their supermassive black holes have evolved together over cosmic time.
Nathan Cristello +6 more
doaj +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. +16 more
openaire +2 more sources
The Morphology of Dwarf Galaxies Hosting Variable Active Galactic Nuclei
The Astrophysical JournalWe 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 +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
AGN Absorption Linked to Host Galaxies [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractMultiwavelength identification of AGN is crucial not only to obtain a more complete census, but also to learn about the physical state of the nuclear activity (obscuration, efficiency, etc.). A panchromatic strategy plays an especially important role when the host galaxies are star-forming.
openaire +2 more sources
Quiescent Host Galaxies of Extended Quasars Revealed by Spectrophotometric Decomposition
The Astrophysical JournalPrevious works of low-redshift quasar host galaxies have focused on compact quasars and found that their host galaxies are mainly star-forming galaxies.
Shengxiu Sun +29 more
doaj +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. +1 more
openaire +2 more sources
The Astrophysical JournalWe 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