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

文献类型：期刊论文

作者Jiang, N1; Wang, HY1; Mo, HJ2,3; Dong XB(董小波)4,5; Wang, TG1; Zhou, HY1,6; Dong XB(董小波)
刊名ASTROPHYSICAL JOURNAL
出版日期2016-12-01
卷号832期号:2
关键词galaxies: active galaxies: general galaxies: halos galaxies: interactions
ISSN号0004-637X
产权排序第四完成单位
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.
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.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
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
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).

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来源：云南天文台

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