Results 41 to 50 of about 38,366 (276)
Decomposition of active galactic nucleus host galaxy images [PDF]
Monthly Notices of the Royal Astronomical Society, 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. +2 more
openaire +2 more sources
New Conformally Invariant Born–Infeld Models and Geometrical Currents
PhysicsA new conformally invariant gravitational generalization of the Born–Infeld (BI) model is proposed and analyzed from the point of view of symmetries. Taking a geometric identity involving the determinant functions detfBμν, Fμν with the Bach Bμν and the ...
Diego Julio Cirilo-Lombardo
doaj +1 more source
Elliptical Galaxy in the Making: The Dual Active Galactic Nuclei and Metal-enriched Halo of Mrk 273 [PDF]
, 2019 A systematic analysis of the X-ray emission from the nearby ultraluminous infrared galaxy Mrk 273 was carried out by combining new 200 ksec Chandra data with archived 44 ksec data.
Iwasawa, Kazushi +9 more
core +2 more sources
Luminosity-dependent X-Ray Active Galactic Nucleus Clustering? [PDF]
The Astrophysical Journal, 2008 We have analyzed the angular clustering of X-ray-selected active galactic nuclei (AGNs) in different flux-limited subsamples of the Chandra Deep Field North (CDF-N) and South (CDF-S) surveys. We find a strong dependence of the clustering strength on the subsample flux limit, a fact that explains most of the disparate clustering results of different XMM
M. Plionis +4 more
openaire +2 more sources
A Diverse Population of z ∼ 2 ULIRGs Revealed by JWST Imaging
The Astrophysical Journal, 2023 Four ultraluminous infrared galaxies (ULIRGs) observed with JWST/NIRcam in the Cosmos Evolution Early Release Science program offer an unbiased preview of the z ∼ 2 ULIRG population.
J.-S. Huang +14 more
doaj +1 more source
The eJWST active galactic nucleus observation catalogue
Astronomy & AstrophysicsContext. The European Archive of the James Webb Space Telescope (eJWST) provides access to all data collected by the James Webb Space Telescope (JWST).
Lenk V. +4 more
doaj +1 more source
X-ray Photons in the CO 2-1 'Lacuna' of NGC 2110
, 2019 A recent ALMA study of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 2110 by Rosario et al. (2019) has reported a remarkable lack of CO 2-1 emission from the circumnuclear region, where optical lines and H2 emission are observed, leading to the ...
Elvis, M., Fabbiano, G., Paggi, A.
core +1 more source
The Accuracy of Morphological Decomposition of Active Galactic Nucleus Host Galaxies
, 2008 In order to assess the accuracy with which we can determine the morphologies of AGN host galaxies, we have simulated more than 50,000 ACS images of galaxies with z < 1.25, using image and noise properties appropriate for the GOODS survey.
B. D. Simmons +3 more
core +1 more source
Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
Modeling the Spectral Energy Distribution of the Active Galactic Nucleus inside NGC 4395
The Astrophysical Journal, 2023 We study the broadband spectral energy distribution (SED) of the prototypical low-mass active galactic nucleus (AGN) in NGC 4395. We jointly model the optical through mid-IR SED with a combination of galaxy and AGN light, and find that on arcsecond ...
Hector Afonso G. Cruz +2 more
doaj +1 more source