Results 81 to 90 of about 1,281,453 (204)
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
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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
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
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Identifying AGN host galaxies with convolutional neural networks
, 2022 Active galactic nuclei (AGN) are supermassive black holes with luminous accretion disks found in some galaxies, and are thought to play an important role in galaxy evolution.
Guo, Ziting +2 more
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Overmassive Supermassive Black Holes in SDSS Close Galaxy Pairs
The Astrophysical JournalSupermassive black holes (SMBHs) and their host galaxies coevolve through channels such as hierarchical merging and active galactic nuclei (AGN) feedback, establishing tight scaling relations between SMBH masses and the properties of the host galaxies ...
Maggie C. Huber +2 more
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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
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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
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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.
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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
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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
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