Seyfert galaxies in UZC-Compact Groups
Abstract
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 (σ>400 km s-1), 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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 2004
- DOI:
- 10.1051/0004-6361:20034289
- arXiv:
- arXiv:astro-ph/0402029
- Bibcode:
- 2004A&A...418...25K
- Keywords:
-
- galaxies: clusters: general;
- galaxies: Seyfert;
- galaxies: interactions;
- Astrophysics
- E-Print:
- 12 pages, 5 figures, A&