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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
Source PublicationThe Astrophysical Journal
2017-08-18
Volume845Issue:2
DOI10.3847/1538-4357/aa8223
Contribution Rank第3完成单位
Indexed BySCI
KeywordDust, Extinction Galaxies: Absorption Lines Galaxies: Individual (Sdss j091848.61+211717.0, Sdss j111354.66+124439.0, Sdss j122749.13+321458.9) Galaxies: Ism
Abstract

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.

Funding ProjectNational Natural Science Foundation of China[NSFC-11573024] ; National Natural Science Foundation of China[11473025] ; National Natural Science Foundation of China[11421303] ; National Basic Research Program of China[2013CB834905] ; Strategic Priority Research Program ; Emergence of Cosmological Structures[XDB09000000] ; National Astronomical Observatories ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science
Funding OrganizationNational Natural Science Foundation of China[NSFC-11573024, 11473025, 11421303] ; National Basic Research Program of China[2013CB834905] ; Strategic Priority Research Program ; Emergence of Cosmological Structures[XDB09000000] ; National Astronomical Observatories ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticlie
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000408111400012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordActive Galactic Nuclei ; Digital Sky Survey ; Spectral Energy-distributions ; Early Data Release ; X-ray-spectra ; Host Galaxies ; Stellar Objects ; Complete Sample ; Quasar Spectra ; Emission
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18179
Collection自由探索组
中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Shaohua; Zhou, Hongyan
Affiliation1.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
Recommended Citation
GB/T 7714
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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