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The nature of obscuration in AGNs - II. Insights from clustering properties
被引:5
|作者:
Shao, Li
[1
]
Li, Cheng
[2
,3
]
Kauffmann, Guinevere
[1
]
Wang, Jing
[4
]
机构:
[1] Max Planck Inst Astrophys, D-85748 Garching, Germany
[2] Max Planck Inst Astrophys, Partner Grp, Shanghai 200030, Peoples R China
[3] Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
[4] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia
关键词:
galaxies: active;
galaxies: interactions;
galaxies: nuclei;
galaxies: Seyfert;
infrared: galaxies;
ACTIVE GALACTIC NUCLEI;
DIGITAL SKY SURVEY;
INFRARED-SURVEY-EXPLORER;
STAR-FORMING GALAXIES;
SUPERMASSIVE BLACK-HOLES;
HOST GALAXIES;
FORMATION RATES;
LOCAL UNIVERSE;
X-RAY;
INACTIVE GALAXIES;
D O I:
10.1093/mnrasl/slu197
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
Based on large optical and mid-infrared (mid-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 [O III] 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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页码:L72 / L76
页数:5
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