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Reddening and HeI λ10830 Absorption Lines in Three Narrow-line Seyfert 1 Galaxies
Zhang, Shaohua1; Zhou, Hongyan1,2; Shi, Xiheng1; Liu WJ(刘文娟)3; Pan, Xiang1,2; Jiang, Ning2; Ji, Tuo1; Jiang, Peng1; Wang, Shufen1,2
发表期刊The Astrophysical Journal
2017-08-18
卷号845期号:2
DOI10.3847/1538-4357/aa8223
产权排序第3完成单位
收录类别SCI
关键词Dust, Extinction Galaxies: Absorption Lines Galaxies: Individual (Sdss j091848.61+211717.0, Sdss j111354.66+124439.0, Sdss j122749.13+321458.9) Galaxies: Ism
摘要

We report the detection of heavy reddening and the He i* λ10830 absorption lines at the active galactic nucleus (AGN) redshift in three narrow-line Seyfert 1 galaxies: SDSS J091848.61+211717.0, SDSS J111354.66+124439.0, and SDSS J122749.13+321458.9. They exhibit very red optical to near-infrared colors, narrow Balmer/Paschen broad emission lines and He i* λ10830 absorption lines. The ultraviolet-optical-infrared nucleus continua are reddened by the SMC extinction law of E(B − V) ~ 0.74, 1.17, and 1.24 mag for three objects, which are highly consistent with the values obtained from the broad-line Balmer decrements, but larger than those of narrow emission lines. The reddening analysis suggests that the extinction dust simultaneously obscures the accretion disk, the broad emission-line region, and the hot dust from the inner edge of the torus. It is possible that the dust obscuring the AGN structures is the dusty torus itself. Furthermore, the Cloudy analysis of the He i* λ10830 absorption lines proposes the distance of the absorption materials to be the extend scale of the torus, which greatly increases probabilities of the obscure and absorption materials being the dusty torus.

语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Articlie
出版者IOP PUBLISHING LTD
ISSN0004-637X
URL查看原文
WOS记录号WOS:000408111400012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Active Galactic Nuclei ; Digital Sky Survey ; Spectral Energy-distributions ; Early Data Release ; X-ray-spectra ; Host Galaxies ; Stellar Objects ; Complete Sample ; Quasar Spectra ; Emission
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18179
专题自由探索组
中国科学院天体结构与演化重点实验室
通讯作者Zhang, Shaohua; Zhou, Hongyan
作者单位1.Polar Research Institute of China, 451 Jinqiao Road, Shanghai, 200136, China
2.Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui, 230026, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
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Zhang, Shaohua,Zhou, Hongyan,Shi, Xiheng,et al. Reddening and HeI λ10830 Absorption Lines in Three Narrow-line Seyfert 1 Galaxies[J]. The Astrophysical Journal,2017,845(2).
APA Zhang, Shaohua.,Zhou, Hongyan.,Shi, Xiheng.,Liu WJ.,Pan, Xiang.,...&Wang, Shufen.(2017).Reddening and HeI λ10830 Absorption Lines in Three Narrow-line Seyfert 1 Galaxies.The Astrophysical Journal,845(2).
MLA Zhang, Shaohua,et al."Reddening and HeI λ10830 Absorption Lines in Three Narrow-line Seyfert 1 Galaxies".The Astrophysical Journal 845.2(2017).
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