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arXiv · 1412.3550

The nature of obscuration in AGN: II. insights from clustering properties

Li Shao·Cheng Li·Guinevere Kauffmann·Jing Wang
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Abstract

Based on large optical and mid-infrared (IR) surveys, we investigate the relation between nuclear activity in local Seyfert 2 galaxies and galaxy interactions using a statistical neighbour counting technique. At the same level of host galaxy star formation (SF), we find that active galactic nuclei (AGNs) with stronger [OIII] emission lines do not show an excess of near neighbours, while AGNs with stronger mid-IR emission do have more near neighbours within a projected distance of 100 kpc. The excess neighbour count increases with decreasing projected radius. These results suggest a phase of torus formation during galaxy interactions.

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Li Shao, Cheng Li, Guinevere Kauffmann, Jing Wang. 2014-12-11. The nature of obscuration in AGN: II. insights from clustering properties. https://doi.org/10.1093/mnrasl/slu197

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