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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
发表期刊ASTROPHYSICAL JOURNAL
2017-02-01
卷号835期号:2
DOI10.3847/1538-4357/835/2/218
产权排序第4完成单位
收录类别SCI
关键词dust, extinction quasars: absorption lines quasars: individual (SDSS J170542.91+354340.2)
摘要

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.

资助项目National 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]
项目资助者National 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]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000401154800010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; INTERSTELLAR EXTINCTION LAW ; ULTRAVIOLET EXTINCTION ; MAGELLANIC-CLOUD ; REDDENED QUASARS ; HIGH-REDSHIFT ; DATA RELEASE ; MU-M ; GALAXIES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10062
专题其他
通讯作者Pan, Xiang
作者单位1.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
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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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