The effect of bars on the obscuration of active nuclei
Astrophysics
2007-05-23 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/9811237,
title = {The effect of bars on the obscuration of active nuclei},
author = {R. Maiolino and G. Risaliti and M. Salvati},
journal= {arXiv preprint arXiv:astro-ph/9811237},
year = {2007}
}
Comments
4 pages, 1 figure, to appear in Astronomy and Astrophysics