The effect of bars on the obscuration of active nuclei

Details The effect of bars on the obscuration of active nuclei The effect of bars on the obscuration of active nuclei

1998-11-15

arxiv.org/abs/astro-ph/9811237v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to appear in Astronomy and Astrophysics

Scientific paper

We present evidence for a strong correlation between the gaseous absorbing column density towards type 2 Seyfert nuclei and the presence of a stellar bar in their host galaxies. Strongly barred Seyfert 2 galaxies have an average Nh that is two orders of magnitude higher than non-barred Sy2s. More than 80% of Compton thick (Nh>10^24 cm^-2) Seyfert 2s are barred. This result indicates that stellar bars are effective in driving gas in the vicinity of active nuclei.

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