Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar

doi:10.3847/2041-8213/aafc1d

CORC > 国家天文台 > 中国科学院国家天文台

	Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar
	Yi, W.2,3,4; Vivek, M.2; Brandt, W. N.2,5,6; Wang, T.7; Timlin, J.2; Ak, N. Filiz 8,9; Schneider, D. P.2,5; Fynbo, J. P. U.1,10; Ni, Q.2; Vito, F.11,12,13
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2019-01-10
卷号	870 期号:2 页码:6
关键词	galaxies: active quasars: absorption lines quasars: individual (SDSS J0827+4252)
ISSN号	2041-8205
DOI	10.3847/2041-8213/aafc1d
英文摘要	We report the discovery of the disappearance of Mg II, Al III, C IV, and Si IV broad absorption lines (BALs) at the same velocity (0.07c), accompanied by a new C IV BAL emerging at a higher velocity (up to 0.11c), in the quasar J0827+4252 at z = 2.038. This is the first report of BAL disappearance (i) over Mg II, Al III, C IV, and Si IV ions and (ii) in a weak emission-line quasar (WLQ). The discovery is based on four spectra from the Sloan Digital Sky Survey and one follow-up spectrum from Hobby-Eberly Telescope/Low-Resolution Spectrograph-2. The simultaneous C IV BAL disappearance and emergence at different velocities, together with no variations in the Catalina Real-Time Transient Survey light curve, indicate that ionization changes in the absorbing material are unlikely to cause the observed BAL variability. Our analyses reveal that transverse motion is the most likely dominant driver of the BAL disappearance/emergence. Given the presence of mildly relativistic BAL outflows and an apparently large C IV emission-line blueshift that is likely associated with strong bulk outflows in this WLQ, J0827+4252 provides a notable opportunity to study extreme quasar winds and their potential in expelling material from inner to large-scale regions.
资助项目	China Scholarships Council[201604910001] ; Chinese National Science Foundation[NSFC-11703076] ; West Light Foundation of The Chinese Academy of Sciences[Y6XB016001] ; NSF[AST-1516784] ; NASA ADP grant[80NSSC18K0878] ; TUBITAK[115F037] ; CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; DNRF ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; University of Texas at Austin McDonald Observatory ; Department of Astronomy ; Pennsylvania State University
WOS关键词	DIGITAL SKY SURVEY ; TELESCOPE ; CATALOG
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000456008400001
资助机构	China Scholarships Council ; China Scholarships Council ; Chinese National Science Foundation ; Chinese National Science Foundation ; West Light Foundation of The Chinese Academy of Sciences ; West Light Foundation of The Chinese Academy of Sciences ; NSF ; NSF ; NASA ADP grant ; NASA ADP grant ; TUBITAK ; TUBITAK ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; DNRF ; DNRF ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Texas at Austin McDonald Observatory ; University of Texas at Austin McDonald Observatory ; Department of Astronomy ; Department of Astronomy ; Pennsylvania State University ; Pennsylvania State University ; China Scholarships Council ; China Scholarships Council ; Chinese National Science Foundation ; Chinese National Science Foundation ; West Light Foundation of The Chinese Academy of Sciences ; West Light Foundation of The Chinese Academy of Sciences ; NSF ; NSF ; NASA ADP grant ; NASA ADP grant ; TUBITAK ; TUBITAK ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; DNRF ; DNRF ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Texas at Austin McDonald Observatory ; University of Texas at Austin McDonald Observatory ; Department of Astronomy ; Department of Astronomy ; Pennsylvania State University ; Pennsylvania State University ; China Scholarships Council ; China Scholarships Council ; Chinese National Science Foundation ; Chinese National Science Foundation ; West Light Foundation of The Chinese Academy of Sciences ; West Light Foundation of The Chinese Academy of Sciences ; NSF ; NSF ; NASA ADP grant ; NASA ADP grant ; TUBITAK ; TUBITAK ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; DNRF ; DNRF ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Texas at Austin McDonald Observatory ; University of Texas at Austin McDonald Observatory ; Department of Astronomy ; Department of Astronomy ; Pennsylvania State University ; Pennsylvania State University ; China Scholarships Council ; China Scholarships Council ; Chinese National Science Foundation ; Chinese National Science Foundation ; West Light Foundation of The Chinese Academy of Sciences ; West Light Foundation of The Chinese Academy of Sciences ; NSF ; NSF ; NASA ADP grant ; NASA ADP grant ; TUBITAK ; TUBITAK ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; DNRF ; DNRF ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Texas at Austin McDonald Observatory ; University of Texas at Austin McDonald Observatory ; Department of Astronomy ; Department of Astronomy ; Pennsylvania State University ; Pennsylvania State University
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/24709]
专题	中国科学院国家天文台
通讯作者	Yi, W.
作者单位	1.Tech Univ Denmark, DTU Space, Elektrovej 327, DK-2800 Lyngby, Denmark 2.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA 3.Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 4.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China 5.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA 6.Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA 7.Univ Sci & Technol China, CAS Key Lab Res Galaxies & Cosmol, Dept Astron, Hefei, Anhui, Peoples R China 8.Erciyes Univ, Dept Astron & Space Sci, Fac Sci, TR-38039 Kayseri, Turkey 9.Erciyes Univ, Astron & Space Sci Observ & Res Ctr, TR-38039 Kayseri, Turkey 10.Univ Copenhagen, Niels Bohr Inst, Cosm Dawn Ctr DAWN, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark
推荐引用方式 GB/T 7714	Yi, W.,Vivek, M.,Brandt, W. N.,et al. Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,870(2):6.
APA	Yi, W..,Vivek, M..,Brandt, W. N..,Wang, T..,Timlin, J..,...&Sameer.(2019).Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar.ASTROPHYSICAL JOURNAL LETTERS,870(2),6.
MLA	Yi, W.,et al."Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar".ASTROPHYSICAL JOURNAL LETTERS 870.2(2019):6.