More bars in Seyfert than in non-Seyfert galaxies

Bibcode
2001qhte.conf..235K
Knapen, J. H.; Shlosman, I.; Peletier, R. F.; Laine, S.
Bibliographical reference

QSO hosts and their environments, Proceedings of an international workshop, held January 10-12, 2001, in Granada, Spain Edited by Isabel Márquez, Josefa Masegosa, Ascencion Del Olmo, Lucas Lara, Emilio García, and Josefina Molina. Dordrecht: Kluwer Academic / Plenum Publishers, 2001 xvii, 376 p. ISBN 0306466627, p.235

Advertised on:
0
2001
Number of authors
4
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We use isophote analysis performed on near-infrared images of matched samples of Seyfert and non-active galaxies to study the overall bar fractions, and properties of the bars. We conclude that there is a small but significant excess of bars among the host galaxies of Seyferts as compared to non-Seyfert control galaxies. Whereas 59% ± 9% of control galaxies are barred, 79% ± 8% of Seyfert hosts are barred. We also find that the bars in Seyfert galaxies are statistically less elliptical, thus ``thicker'' or ``weaker'', than those in non-active galaxies. Implications for models of fuelling of AGN, as well as possible caveats in the interpretation of our results in that context, are briefly discussed.
Type
Non-refereed

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