Results 11 to 20 of about 101,045 (324)
Testing the Radio-selection Method of Dual Active Galactic Nuclei in the Stripe 82 Field
The Astrophysical Journal, 2023 We test the merger-induced dual active galactic nuclei (dAGNs) paradigm using a sample of 35 radio galaxy pairs from the Sloan Digital Sky Survey Stripe 82 field.
Arran C. Gross +5 more
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Galaxy activity in merging binary galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present the results of a study of galaxy activity in two merging binary clusters (A168 and A1750) using the Sloan Digital Sky Survey (SDSS) data supplemented with the data in the literature. We have investigated the merger histories of A168 and A1750 by combining the results from a two-body dynamical model and X-ray data.
Myung Gyoon Lee, Ho Seong Hwang
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Chemical abundances in active galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The Sloan Digital Sky Survey (SDSS) has proved to be a powerful resource for understanding the physical properties and chemical composition of star-forming galaxies in the local Universe. The SDSS population of active galactic nuclei (AGNs) remains as of yet less explored in this capacity.
E. C. Moran, Sophia R Flury
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Activity of the Seyfert galaxy neighbours [PDF]
Astronomy & Astrophysics, 2013 Accepted for publication in A&A. 17 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:0910.1355v1 (withdrawn)
I. Georgantopoulos +8 more
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The Astrophysical Journal Supplement Series, 2023 The main objective of this article, the first in a dedicated series, is to report basic results on systematic research of low-redshift optically selected SDSS Type 2 active galactic nuclei (AGNs) but with apparent optical variabilities.
XueGuang Zhang
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Near-infrared photometry of isolated spirals with and without an AGN. I: The Data [PDF]
, 1999 We present infrared imaging data in the J and K' bands obtained for 18 active spiral galaxies, together with 11 non active galaxies taken as a control sample.
Delgado, R. M. Gonzalez +8 more
core +8 more sources
Mechanical heating by active galaxies [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005 Jets and winds are significant channels for energy loss from accreting black holes. These outflows mechanically heat their surroundings, through shocks as well as gentler forms of heating. We discuss recent efforts to understand the nature and distribution of mechanical heating by central active galactic nuclei (AGN) in clusters of ...
Begelman, M, Ruszkowski, M
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Nuclear spallation in active galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 A number of works point to the presence of narrow emission features at unusual energies in the X-ray spectra of active galactic nuclei (AGN) or to potentially low iron abundances as possible evidence for the spallation of iron. With the imminence of high-resolution calorimeter spectroscopy, the potential to test spallation models in astrophysical ...
Christopher S. Reynolds +7 more
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Shock Excitation in Narrow-line Regions Powered by AGN Outflows
The Astrophysical Journal, 2023 Outflows in an active galactic nucleus (AGN) are considered to play a key role in the evolution of the host galaxy through transfer of a large amount of energy.
Misaki Mizumoto +12 more
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Deficiency of `Thin' Stellar Bars in Seyfert Host Galaxies [PDF]
, 2000 Using all available major samples of Seyfert galaxies and their corresponding control samples of closely matched non-active galaxies, we find that the bar ellipticities (or axial ratios) in Seyfert galaxies are systematically different from those in non ...
Knapen, Johan H. +2 more
core +3 more sources