DIFFERENCES IN HALO-SCALE ENVIRONMENTS BETWEEN TYPE 1 AND TYPE 2 AGNs AT LOW REDSHIFT

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	DIFFERENCES IN HALO-SCALE ENVIRONMENTS BETWEEN TYPE 1 AND TYPE 2 AGNs AT LOW REDSHIFT
	Jiang, N 1; Wang, HY 1; Mo, HJ 2,3; Dong XB(董小波)4,5; Wang, TG 1; Zhou, HY 1,6; Dong XB(董小波)
刊名	ASTROPHYSICAL JOURNAL
	2016-12-01
卷号	832 期号:2
关键词	galaxies: active galaxies: general galaxies: halos galaxies: interactions
ISSN号	0004-637X
通讯作者	Jiang, N (reprint author), Chinese Acad Sci, Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China.
产权排序	第四完成单位
英文摘要	Using low-redshift (z < 0.09) samples of active galactic nuclei (AGNs), normal galaxies and groups of galaxies selected from the Sloan Digital Sky Survey, we study the environments of Type. 1 and Type. 2 AGNs, both on small and large scales. Comparisons are made for galaxy samples matched in redshift, r-band luminosity, [O III] luminosity, and also the position in groups (central or satellite). We find that Type. 2 AGNs and normal galaxies reside in similar environments. Type. 1 and Type. 2 AGNs have similar clustering properties on large scales (greater than or similar to 1 h(-1) Mpc), but at scales smaller than 100 h(-1) kpc, Type. 2s have significantly more neighbors than Type. 1s (3.09 +/- 0.69 times more for central AGNs at less than or similar to 30 h(-1) kpc). These results suggest that Type. 1 and Type. 2 AGNs are hosted by halos of similar masses, as can also be seen directly from the mass distributions of their host groups (similar to 10(12) h(-1) M. for centrals and similar to 10(13) h(-1) M-circle dot for satellites). Type. 2s have significantly more satellites around them, and the distribution of their satellites is also more centrally concentrated. The host galaxies of both types of AGNs have similar optical properties, but their infrared colors are significantly different. Our results suggest that the simple unified model based solely on torus orientation is not sufficient, but that galaxy interactions in dark matter halos must have played an important role in the formation of the dust structure, which obscures AGNs.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; SUPERMASSIVE BLACK-HOLES ; DARK-MATTER HALOES ; CROSS-CORRELATION FUNCTION ; EMISSION-LINE SPECTRA ; LUMINOUS RED GALAXIES ; STAR-FORMATION RATES ; X-RAY ; SEYFERT-GALAXIES
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.3847/0004-637X/832/2/111/meta
语种	英语
WOS记录号	WOS:000389243600002
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9839]
专题	云南天文台_丽江天文观测站（南方基地）云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, The University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China 2.Department of Astronomy,University of Massachusetts, Amherst MA 01003-9305, USA 3.Physics Department and Center for Astrophysics, Tsinghua University, Beijing 10084, China 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, China 6.Polar Research Institute of China, 451 Jinqiao Road, Shanghai, 200136, China
推荐引用方式 GB/T 7714	Jiang, N,Wang, HY,Mo, HJ,et al. DIFFERENCES IN HALO-SCALE ENVIRONMENTS BETWEEN TYPE 1 AND TYPE 2 AGNs AT LOW REDSHIFT[J]. ASTROPHYSICAL JOURNAL,2016,832(2).
APA	Jiang, N.,Wang, HY.,Mo, HJ.,董小波.,Wang, TG.,...&Dong XB.(2016).DIFFERENCES IN HALO-SCALE ENVIRONMENTS BETWEEN TYPE 1 AND TYPE 2 AGNs AT LOW REDSHIFT.ASTROPHYSICAL JOURNAL,832(2).
MLA	Jiang, N,et al."DIFFERENCES IN HALO-SCALE ENVIRONMENTS BETWEEN TYPE 1 AND TYPE 2 AGNs AT LOW REDSHIFT".ASTROPHYSICAL JOURNAL 832.2(2016).