Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4 m telescope

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	Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4 m telescope
	Yi WM(易卫敏)1,2,3 ; Wu, XueBing 4,5; Wang, FeiGe 4; Yang, JinYi 4; Yang, Qian 4; Bai JM(白金明)1,3
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2015-09
卷号	58 期号:9
关键词	high-redshift active galactic nuclear (AGN) broad absorption line quasar (BALQSO) outflow
ISSN号	1674-7348
通讯作者	Wu, XB (reprint author), Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China.
产权排序	第一完成单位
英文摘要	The ultraviolet broad absorption lines have been seen in the spectra of quasars at high redshift, and are generally considered to be caused by outflows with velocities from thousands kilometers per second to one tenth of the speed of light. They provide crucial implications for the cosmological structures and physical evolutions related to the feedback of active galactic nuclei (AGNs). Recently, through a dedicated program of optically spectroscopic identifications of selected quasar candidates at redshift 5 by using the Lijiang 2.4 m telescope, we discovered two luminous broad absorption line quasars (BALQSOs) at redshift about 4.75. One of them may even have the potentially highest absorption Balnicity Index (BI) ever found to date, which is remarkably characterized by its deep, broad absorption lines and sub-relativistic outflows. Further physical properties, including the metal abundances, variabilities, evolutions of the supermassive black holes (SMBH) and accretion disks associated with the feedback process, can be investigated with multi-wavelength follow-up observations in the future.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	DIGITAL SKY SURVEY ; DATA RELEASE ; RADIO PROPERTIES ; EMISSION-LINE ; BLACK-HOLES ; FEEDBACK ; FRACTION ; CATALOG ; CONTINUUM ; EVOLUTION
收录类别	SCI ; EI
原文出处	http://link.springer.com/article/10.1007%2Fs11433-015-5685-4
语种	英语
WOS记录号	WOS:000360834200010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5459]
专题	云南天文台_丽江天文观测站（南方基地）云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China 2.University of the Chinese Academy of Sciences, Beijing, 100049, China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China 4.Department of Astronomy, School of Physics, Peking University, Beijing, 100871, China 5.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Yi WM,Wu, XueBing,Wang, FeiGe,et al. Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4 m telescope[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2015,58(9).
APA	Yi WM,Wu, XueBing,Wang, FeiGe,Yang, JinYi,Yang, Qian,&Bai JM.(2015).Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4 m telescope.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,58(9).
MLA	Yi WM,et al."Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4 m telescope".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 58.9(2015).