Results 1 to 10 of about 511 (139)
Galaxies with Binary Nuclei [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractIt is known that among active galaxies (AG) with strong emission lines (UV-galaxies, Sy1 and Sy2, Markarian and Kazarian galaxies, radio-galaxies, QSOs host galaxies and so on) there is a large percentage of objects with double and multiple (or complex) nuclei.
Yervant Terzian, Edward Khachikian
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Active galactic nuclei and galaxy interactions [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 We perform a statistical analysis of active galactic nucleus (AGN) host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the Sloan Digital Sky Survey Data Release 4 data by Kauffmann et al. and pair galaxies obtained from the same data set by Alonso et al.
Alonso, M. Sol +3 more
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Young nuclei in dwarf elliptical galaxies [PDF]
Astronomy Letters, 2007 accepted to "Astronomy Letters". Version for astro-ph with colour figures.
Chilingarian, Igor V. +3 more
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Merging Galaxies with Active Nuclei [PDF]
Symposium - International Astronomical Union, 1999 We are investigating a sample of nearby interacting and merging galaxies showing starburst properties and/or nonthermal nuclear activity (e.g. Mrk 231, Mrk 739, Mrk 1027, NGC 2992, Arp 92).
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Properties of Galaxies with Peculiar Nuclei [PDF]
Publications of the Astronomical Society of the Pacific, 1967 In a former note (Sersic and Pastoriza 1965) we published the results of a survey of bright southern galaxies which were inspected for peculiarities in their nuclei. Although the sample was small ( 35 galaxies) it suggested a relationship between the existence of a bar and the presence of abnormal features in their nuclei.
Sérsic, José Luis, 1933-1993 +1 more
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Interacting Nuclei in Distant Galaxies [PDF]
International Astronomical Union Colloquium, 1990 The interaction of galaxies not only occurs in galactic scales, but also may be linked to the binary cores in active galactic galaxies. The presence of a binary in the center of galaxies was suggested by Begelman, Blandford and Rees (1980). Gaskell (1983) suggests that supermassive binaries may account for the observed structure of emission line ...
Wei Zheng, Steven A. Grandi
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Galaxies and Their Nuclei [PDF]
Highlights of Astronomy, 1974 Our Extraordinary General Assembly is devoted to the memory of one of the greatest men of science to the genial Polish astronomer - Nicolaus Copernicus. The main service of Copernicus which has made his name immortal was in finding the correct interpretation of the planetary motions we observe.
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Active Galactic Nuclei among Polar-Ring Galaxies [PDF]
Astronomy Letters, 2020 Based on SDSS data, we consider the fraction of active galactic nuclei among polar-ring galaxies. We have found evidence for an excess of Seyfert galaxies and LINERs among polar-ring galaxies compared to ordinary objects. The observed nuclear activity of polar-ring galaxies may be associated with the accretion of gas from the region of the polar ...
Smirnov, D. V., Reshetnikov, V. P.
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Quasi-periodic eruptions from galaxy nuclei
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT I consider quasi-periodic eruptions (QPEs) from galaxy nuclei. All the known cases fit naturally into a picture of accretion from white dwarfs (WDs) in highly eccentric orbits about the central black holes which decay through gravitational wave emission.
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Spatially Resolved Spectra of 3C Galaxy Nuclei [PDF]
The Astronomical Journal, 1998 We present and discuss visible-wavelength long-slit spectra of four low redshift 3C galaxies obtained with the STIS instrument on the Hubble Space Telescope. The slit was aligned with near-nuclear jet-like structure seen in HST images of the galaxies, to give unprecedented spatial resolution of the galaxy inner regions.
Hutchings, J. B. +5 more
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