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A Candidate for an Intrinsic Dusty Absorber with a Metal-rich Damped Ly alpha Absorption Line System in the Quasar J170542.91+354340.2
Pan, Xiang1,2; Zhou, Hongyan1,2; Ge, Jian3; Jiang, Peng1,2; Yang B(杨彬)4; Lu, Honglin1; Ji, Tuo1,2; Zhang, Shaohua2; Shi, Xiheng2
Source PublicationASTROPHYSICAL JOURNAL
2017-02-01
Volume835Issue:2
DOI10.3847/1538-4357/835/2/218
Contribution Rank第4完成单位
Indexed BySCI
Keyworddust, extinction quasars: absorption lines quasars: individual (SDSS J170542.91+354340.2)
Abstract

We present a detailed analysis of the unusual damped Ly alpha absorption line system (DLA) toward the quasar SDSS J170542.91+354340.2 at a redshift of 2, previously reported by Noterdaeme et al. as one of the very few CO absorbers known to date at high z. This DLA is exceptional in that: (1) its extinction curve is similar to peculiar Milky Way sightlines penetrating star formation regions; (2) its absorption components are redshifted at a speed of several hundred km s(-1) compared to broad Balmer emission lines; (3) its gas-phase metallicity is super-solar as evaluated from more than 30 absorption lines; (4) detection of residual flux in the DLA trough and variability of C IV absorption is possible. Based on these facts, we argue that this dusty DLA is a good candidate for an intrinsic quasar 2175 angstrom absorber, and can originate from star formation regions of the quasar's host galaxy. We discuss in detail the gas and dust properties, and the dust depletion. Follow-up observations, such as spectropolarimetry and optical/infrared spectroscopy, will help to confirm the system's intrinsic nature and to explore how dust grains behave in the extreme environments proximate to quasars.

Funding ProjectNational Basic Research Program of China (973 Program)[2013CB834905] ; National Basic Research Program of China (973 Program)[2015CB857005] ; National Natural Science Foundation of China (NSFC)[11473025] ; National Natural Science Foundation of China (NSFC)[11233002] ; National Natural Science Foundation of China (NSFC)[11203022] ; National Natural Science Foundation of China (NSFC)[11421303] ; National Natural Science Foundation of China (NSFC)[11033007] ; SOC program[CHI-NARE2015-02-03] ; Natural Science Foundation of Shanghai[15ZR1444200] ; NASA[NAS5-26555] ; NASA Office of Space Science[NNX09AF08G] ; National Aeronautics and Space Administration ; National Science Foundation ; Alfred P. Sloan Foundation ; U.S. Department of Energy ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England ; [NSFC-11503022] ; [NSFC-11573024]
Funding OrganizationNational Basic Research Program of China (973 Program)[2013CB834905, 2015CB857005] ; National Natural Science Foundation of China (NSFC)[11473025, 11233002, 11203022, 11421303, 11033007] ; SOC program[CHI-NARE2015-02-03] ; Natural Science Foundation of Shanghai[15ZR1444200] ; NASA[NAS5-26555] ; NASA Office of Space Science[NNX09AF08G] ; National Aeronautics and Space Administration ; National Science Foundation ; Alfred P. Sloan Foundation ; U.S. Department of Energy ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England ; [NSFC-11503022] ; [NSFC-11573024]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000401154800010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; INTERSTELLAR EXTINCTION LAW ; ULTRAVIOLET EXTINCTION ; MAGELLANIC-CLOUD ; REDDENED QUASARS ; HIGH-REDSHIFT ; DATA RELEASE ; MU-M ; GALAXIES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10062
Collection其他
Corresponding AuthorPan, Xiang
Affiliation1.A Candidate for an Intrinsic Dusty Absorber with a Metal-rich Damped Lyα Absorption Line System in the Quasar J170542.91+354340.2.pdf
2.Polar Research Institute of China, 451 Jinqiao Road, Shanghai 200136, China
3.Astronomy Department, University of Florida, 211 Bryant Space Science Center, P.O. Box 112055, Gainesville, FL 32611, USA
4.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
Recommended Citation
GB/T 7714
Pan, Xiang,Zhou, Hongyan,Ge, Jian,et al. A Candidate for an Intrinsic Dusty Absorber with a Metal-rich Damped Ly alpha Absorption Line System in the Quasar J170542.91+354340.2[J]. ASTROPHYSICAL JOURNAL,2017,835(2).
APA Pan, Xiang.,Zhou, Hongyan.,Ge, Jian.,Jiang, Peng.,Yang B.,...&Shi, Xiheng.(2017).A Candidate for an Intrinsic Dusty Absorber with a Metal-rich Damped Ly alpha Absorption Line System in the Quasar J170542.91+354340.2.ASTROPHYSICAL JOURNAL,835(2).
MLA Pan, Xiang,et al."A Candidate for an Intrinsic Dusty Absorber with a Metal-rich Damped Ly alpha Absorption Line System in the Quasar J170542.91+354340.2".ASTROPHYSICAL JOURNAL 835.2(2017).
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