Volume 418, Number 1, April IV 2004
|Page(s)||25 - 32|
|Published online||02 April 2004|
Seyfert galaxies in UZC-Compact Groups
Alma Mater Studiorum – Dipartimento di Astronomia, via Ranzani 1, 40127 Bologna, Italy
2 INAF-Osservatorio Astronomico Bologna, via Ranzani 1, 40127 Bologna, Italy
Corresponding author: B. Kelm, firstname.lastname@example.org
Accepted: 6 January 2004
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 ( 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.
Key words: galaxies: clusters: general / galaxies: Seyfert / galaxies: interactions
© ESO, 2004
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