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Discovery of 16 New z similar to 5.5 Quasars: Filling in the Redshift Gap of Quasar Color Selection
Yang, Jinyi1,2,3; Fan, Xiaohui2,3; Wu, Xue-Bing1,2; Wang, Feige1,2,3; Bian, Fuyan4,9; Yang, Qian1,2; McGreer, Ian D.3; Yi WM(易卫敏)5,6; Jiang, Linhua2; Green, Richard3; Yue, Minghao1,3; Wang, Shu1,2; Li, Zefeng1; Ding, Jiani3; Dye, Simon7; Lawrence, Andy8; Stromlo Fellow.9
发表期刊ASTRONOMICAL JOURNAL
2017-04-01
卷号153期号:4
DOI10.3847/1538-3881/aa6577
产权排序第5完成单位
收录类别SCI
关键词Galaxies: Active Galaxies: High-redshift Quasars: Emission Lines Quasars: General
摘要

We present initial results from the first systematic survey of luminous z similar to 5.5 quasars. Quasars at z similar to 5.5, the post-reionization epoch, are crucial tools to explore the evolution of intergalactic medium, quasar evolution, and the early super-massive black hole growth. However, it has been very challenging to select quasars at redshifts 5.3 <= z <= 5.7 using conventional color selections, due to their similar optical colors to late-type stars, especially M dwarfs, resulting in a glaring redshift gap in quasar redshift distributions. We develop a new selection technique for z similar to 5.5 quasars based on optical, near-IR, and mid-IR photometric data from Sloan Digital Sky Survey (SDSS), UKIRT InfraRed Deep Sky Surveys-Large Area Survey (ULAS), VISTA Hemisphere Survey (VHS), and Wide Field Infrared Survey Explorer. From our pilot observations in the SDSS-ULAS/VHS area, we have discovered 15 new quasars at 5.3. z. 5.7 and 6 new lower redshift quasars, with SDSS z band magnitude brighter than 20.5. Including other two z similar to 5.5 quasars already published in our previous work, we now construct a uniform quasar sample at 5.3 <= z <= 5.7, with 17 quasars in a similar to 4800 square degree survey area. For further application in a larger survey area, we apply our selection pipeline to do a test selection by using the new wide field J-band photometric data from a preliminary version of the UKIRT Hemisphere Survey (UHS). We successfully discover the first UHS selected z similar to 5.5 quasar.

项目资助者NSFC(11373008, 11533001) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; National Key Basic Research Program of China(2014CB845700) ; Ministry of Science and Technology of China(2016YFA0400703) ; U.S. NSF(AST 11-07682, AST 15-15115) ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories ; Special Fund for Astronomy from the Ministry of Finance in China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; University of Arizona ; Brazilian Participation Group ; Brookhaven National Laboratory ; University of Cambridge ; Carnegie Mellon University ; University of Florida ; French Participation Group ; German Participation Group ; Harvard University ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New York University ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University ; National Aeronautics and Space Administration
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
ISSN0004-6256
URL查看原文
WOS记录号WOS:000398263900002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Digital Sky Survey ; Field Spectrograph Wifes ; Infrared-survey-explorer ; Black-hole Mass ; Luminosity Function ; Data Reduction ; Survey Ukidss ; Data Release ; Spectra ; Sample
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10013
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Yang, Jinyi
作者单位1.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China
2.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
3.Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
4.Research School of Astronomy and Astrophysics, Australian National University, Weston Creek, ACT 2611, Australia
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
6.Lehigh University, 27 Memorial Drive West, Bethlehem, PA 18015, USA
7.School of Physics and Astronomy, Nottingham University, University Park, Nottingham, NG7 2RD, UK
8.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK
9.Stromlo Fellow
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Yang, Jinyi,Fan, Xiaohui,Wu, Xue-Bing,et al. Discovery of 16 New z similar to 5.5 Quasars: Filling in the Redshift Gap of Quasar Color Selection[J]. ASTRONOMICAL JOURNAL,2017,153(4).
APA Yang, Jinyi.,Fan, Xiaohui.,Wu, Xue-Bing.,Wang, Feige.,Bian, Fuyan.,...&Stromlo Fellow..(2017).Discovery of 16 New z similar to 5.5 Quasars: Filling in the Redshift Gap of Quasar Color Selection.ASTRONOMICAL JOURNAL,153(4).
MLA Yang, Jinyi,et al."Discovery of 16 New z similar to 5.5 Quasars: Filling in the Redshift Gap of Quasar Color Selection".ASTRONOMICAL JOURNAL 153.4(2017).
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