Seyfert galaxies in UZC-Compact Groups

Details Seyfert galaxies in UZC-Compact Groups Seyfert galaxies in UZC-Compact Groups

2004-02-02

arxiv.org/abs/astro-ph/0402029v1

Astron.Astrophys. 418 (2004) 25

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures, A&A, accepted

Scientific paper

10.1051/0004-6361:20034289

We present results concerning the occurrence of Seyfert galaxies in a new automatically selected sample of nearby Compact Groups of galaxies (UZC-CGs). Seventeen Seyferts are found, constituting ~3% of the UZC-CG galaxy population. CGs hosting and non-hosting a Seyfert member exhibit no significant differences, except that a relevant number of Sy2 is found in unusual CGs, all presenting large velocity dispersion (sigma > 400 km/s), many neighbours and a high number of ellipticals. We also find that the fraction of Seyferts in CGs is 3 times as large as that among UZC-single-galaxies, and results from an excess of Sy2s. CG-Seyferts are not more likely than other CG galaxies to present major interaction patterns, nor to display a bar. Our results indirectly support the minor-merging fueling mechanism.

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