Galaxies with ultraviolet continuum that have double and multiple nuclei. II

Petrosyan, A. R.; Saakyan, K. A.; Khachikyan, É. E.

doi:10.1007/bf01005361

Cited by 14 publications

(5 citation statements)

References 12 publications

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“…It has been shown convincingly [2][3][4][5] for a number of galaxies with binary or multiple nuclei that in many cases there are no direct indications that galaxies have approached one another or merged.…”

Section: Introductionmentioning

confidence: 99%

Spectral and photometric study of compact groups of compact galaxies

2007

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Results are presented from a spectral, photometric, and morphological study of two compact groups of compact galaxies (CGCG) from Shahbazian's list. The observations were made on the 1.5-m ESO telescope and the 2.6-m telescope at the Byurakan Astrophysical Observatory (BAO) during 1999-2000. These data are compared with data for the Shahbazian compact group 4. A high spatial density of galaxies, ranging from 10000 to 100000 galaxies per Mpc 3 , is observed in all the groups that were studied. The discovery of a Seyfert Sy1 galaxy in the Shahbazian 355 compact group is especially noteworthy. The direct photographs of the CGCGs that were studied contain no signs of merging or tidal interactions among the members of these groups. This suggests that the galaxies in these dense systems have a common origin.

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Section: Introductionmentioning

confidence: 99%

Spectral and photometric study of compact groups of compact galaxies

2007

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“…In fact, about 10% of UV-excess galaxies have binary nuclei [35][36][37]. In fact, about 10% of UV-excess galaxies have binary nuclei [35][36][37].…”

Section: Uv Galaxies With Two Nucleimentioning

confidence: 99%

Ambartsumyan’s concept of active galactic nuclei

Khachikian

2010

Astrophysics

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As Victor Ambartsumyan, himself, noted, the concept of active galactic nuclei occupies a special place among his scientific ideas. It was proposed more than half a century ago and was recognized by the U.S. National Academy of Sciences as revolutionary, on a copernican scale. However, by no means all of its propositions were accepted at once by large parts of the astronomy community. Nevertheless, as the American astrophysicist A. R. Sandage has written, "today, not one astronomer would deny the mystery surrounding the nuclei of galaxies or that the first to recognize the rich reward held in this treasury was Viktor Ambartsumian." The purpose of this article is to acquaint the reader with the major stages in the formation and development of the concept of active galactic nuclei and with some of the work on this topic done at the Byurakan and other astrophysical observatories throughout the world.

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“…Six objects (11%) in the sample are Seyfert galaxies: Markaryan 471, 533, 613, 744, 759, 984 and six objects (11%) are galaxies with double or multiple nuclei [16,17].…”

Section: Degree Of Activity Of Galaxies C0ntaining Superassociationsmentioning

confidence: 99%