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Photoionization=driven Absorption=line Variability in Balmer Absorption Line Quasar LBQS 1206+1052
Sun, Luming1,2; Zhou, Hongyan1,2; Ji, Tuo1; Jiang, Peng1; Liu, Bo1,2; Liu WJ(刘文娟)3; Pan, Xiang1,2; Shi, Xiheng1; Wang JG(王建国)3; Wang, Tinggui2; Yang, Chenwei2; Zhang, Shaohua1; Miller, Lauren P.4; Sun, Luming(Polar Res Inst China, 451 Jinqiao Rd, Shanghai, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-04-01
卷号838期号:2
DOI10.3847/1538-4357/aa63eb
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Active Galaxies: Evolution
摘要In this paper we present an analysis of absorption-line variability in mini-BAL quasar LBQS 1206+ 1052. The Sloan Digital Sky Survey spectrum demonstrates that the absorption troughs can be divided into two components of blueshift velocities of similar to 700 and similar to 1400km s(-1) relative to the quasar rest frame. The former component shows rare Balmer absorption, which is an indicator of high-density absorbing gas; thus, the quasar is worth follow-up spectroscopic observations. Our follow-up optical and near-infrared spectra using MMT, YFOSC, TSpec, and DBSP reveal that the strengths of the absorption lines vary for both components, while the velocities do not change. We reproduce all of the spectral data by assuming that only the ionization state of the absorbing gas is variable and that all other physical properties are invariable. The variation of ionization is consistent with the variation of optical continuum from the V-band light curve. Additionally, we cannot interpret the data by assuming that the variability is due to a movement of the absorbing gas. Therefore, our analysis strongly indicates that the absorption-line variability in LBQS 1206+ 1052 is photoionization driven. As shown from photoionization simulations, the absorbing gas with blueshift velocity of similar to 700 km s(-1) has a density in the range of 10(9) to 10(10) cm(-3) and a distance of similar to 1 pc, and the gas with blueshift velocity of similar to 1400 km s(-1) has a density of 10(3) cm(-3) and a distance of similar to 1 kpc.
项目资助者National Basic Research Program of China (the 973 Program)(2013CB834905) ; National Natural Science Foundation of China(NSFC-11421303, 11473025) ; Natural Science Foundation of Shanghai(15ZR1444200) ; 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 ; CAS ; People's Government of Yunnan Province ; (NSFC-11503022) ; (NSFC-11573024)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000398118500012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; BLACK-HOLE MASSES ; EMISSION-LINE ; TIME-SCALES ; BROAD ; OUTFLOW ; DISCOVERY ; SPECTRA ; TEMPERATURE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10021
专题自由探索组
通讯作者Sun, Luming(Polar Res Inst China, 451 Jinqiao Rd, Shanghai, Peoples R China)
作者单位1.Polar Research Institute of China, 451 Jinqiao Road, Shanghai, China
2.Department of Astronomy, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan, China
4.Lehigh University, 27 Memorial Drive West, Bethlehem, PA 18015, USA
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Sun, Luming,Zhou, Hongyan,Ji, Tuo,et al. Photoionization=driven Absorption=line Variability in Balmer Absorption Line Quasar LBQS 1206+1052[J]. ASTROPHYSICAL JOURNAL,2017,838(2).
APA Sun, Luming.,Zhou, Hongyan.,Ji, Tuo.,Jiang, Peng.,Liu, Bo.,...&Sun, Luming.(2017).Photoionization=driven Absorption=line Variability in Balmer Absorption Line Quasar LBQS 1206+1052.ASTROPHYSICAL JOURNAL,838(2).
MLA Sun, Luming,et al."Photoionization=driven Absorption=line Variability in Balmer Absorption Line Quasar LBQS 1206+1052".ASTROPHYSICAL JOURNAL 838.2(2017).
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