The nuclear activity of interacting galaxies

Details The nuclear activity of interacting galaxies The nuclear activity of interacting galaxies

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...57..643d&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 57, April 1985, p. 643-664.

Astronomy and Astrophysics

Astrophysics

239

Astronomical Photometry, Astronomical Spectroscopy, Galactic Clusters, Galactic Nuclei, Interacting Galaxies, Seyfert Galaxies, Active Galactic Nuclei, Astronomical Catalogs, Data Reduction, Gravitational Effects, Interactions, Spectrophotometry, Spiral Galaxies

Scientific paper

A search for active galactic nuclei among interacting galaxies is reported. A sample of 167 systems of interacting and asymmetric galaxies was observed spectrophotometrically in the spectral range 4700-7100 A. The results are compared with a sample of isolated galaxies. It is found that (1) there are no Seyfert nuclei in elliptical or dwarf irregular galaxies of the sample; (2) there is an excess of Seyfert nuclei among interacting spirals, but it is only at the 90 percent confidence level; (3) this excess becomes statistically significant (98 percent) when only strongly interacting spirals are included (four new Seyfert nuclei are presented); (4) in the subgroup of galaxies with extreme tidal distortions, no Seyfert nuclei were found.

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