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A Candidate of Intrinsic Dusty Absorber with Metal-rich absorption system in the Quasar J1705+3543
Pan Xiang 1 #,Zhou Hongyan 2,Ge Jian 3,Jiang Peng 1 *,Yang Bin 4,Lu Honglin 5,Ji Tuo 2,Zhang Shaohua 6,Shi Xiheng 6
1.Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026;Polar Research Institute of China, Shanghai 200136, China
2.Polar Research Institute of China, Shanghai 200136, China;Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026
3.Astronomy Department, University of Florida, Gainesville, FL32611, USA
4.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
5.Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026
6.Polar Research Institute of China, Shanghai 200136, China
*Correspondence author
#Submitted by
Subject:
Funding: Specialized Research Fund for the Doctoral Program of Higher Education (No.20123402120016)
Opened online:31 May 2016
Accepted by: none
Citation: Pan Xiang,Zhou Hongyan,Ge Jian.A Candidate of Intrinsic Dusty Absorber with Metal-rich absorption system in the Quasar J1705+3543[OL]. [31 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4690425
 
 
We present report an unusual damped lyaabsorption line system (DLA) towards the quasar SDSSJ170542.91+354340.2 at a redshift of 2. TheDLA is exceptional in that (1) its extinction curveis similar to peculiar Milky Way sightlines penetratingstar formation regions; (2) absorption components areredshifted at a speed range of up to 600 kms comparedto broad Balmer emission lines; (3) its gas-phase metallicityis super-solar and (4) evident residual flux isdetected in the DLA trough. This dusty DLA is best interpretedas a candidate of intrinsic quasar 2175~{AA} absorber, maybeassociated with star formation activities.Follow-up spectroscopies will helpto confirm the intrinsic nature and to explore dust grainsin the extreme environment proximate to the quasar.
Keywords:Astrophysics, ISM, quasars, dust extinction
 
 
 

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