Results 1 to 10 of about 1,055 (210)
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.
Hwang, Ho Seong, Lee, Myung Gyoon
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Outflows in the Disks of Active Galaxies [PDF]
The Astrophysical Journal, 2019 Abstract Recent advances in observations have provided a wealth of measurements of the expansions of outflows in galactic disks out to large radii in a variety of galactic hosts. To provide an updated baseline for the interpretation of such data, and to assess to what extent the present status of the modeling is consistent with the ...
N. Menci +7 more
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Astrophysics and Space Science, 2006 29 pages, 13 figures, Ap&SS in ...
Kollatschny, Wolfram, Ting-Gui, Wang
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Active galaxies and radiative heating
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005 There is abundant evidence that heating processes in the central regions of elliptical galaxies have both prevented large–scale cooling flows and assisted in the expulsion of metal rich gas. We now know that each such spheroidal system harbours in its core a massive black hole weighing ca.
J. P. Ostriker, CIOTTI, LUCA
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Active galaxies and cluster gas [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005 Two lines of evidence indicate that active galaxies, principally radio galaxies, have heated the diffuse hot gas in clusters. The first is the general need for additional heating to explain the steepness of the X–ray luminosity–temperature relation in clusters, the second is to solve the cooling–flow problem in cluster cores.
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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.
Flury, Sophia R., Moran, Edward C.
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Nuclear activity in isolated galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 7 figures, 7 ...
Hernández-Ibarra, Francisco J. +5 more
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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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A study of active galaxies in groups of galaxies and in the field
Communications of the Byurakan Astrophysical Observatory, 2023 We study regions with radius of 500 pc around of the central radio galaxies from our sample. For this study were chosen about 30 nearby 3C radio galaxies of different FR types. We bring the maps of optical galaxies that are overlaid on the radio map of 3C radio source. It was used also the maps of these regions in all available wavelength.
R. R. Andreasyan +5 more
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Identification of active galaxies behind the Coma cluster of galaxies [PDF]
Astronomy and Astrophysics Supplement Series, 1999 We describe the results of an efficient survey to identify bright B < ∼ 18 active galactic nuclei (AGN) within ≈ 4 • (4.7 h −1 Mpc projected radius) of the centre of the Coma cluster of galaxies. The candidates have been carefully selected either as unresolved UV-excess objects with no detected proper motion, or from identifications on objective-prism ...
Ledoux, C. +5 more
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