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A SURVEY OF LUMINOUS HIGH-REDSHIFT QUASARS WITH SDSS AND WISE. II. THE BRIGHT END OF THE QUASAR LUMINOSITY FUNCTION AT z similar to 5
Yang, Jinyi1,2; Wang, Feige1,2; Wu, Xue-Bing1,3; Fan, Xiaohui2,3; McGreer, Ian D.2; Bian, Fuyan4,9; Yi WM(易卫敏)5,6; Yang, Qian1,2; Ai, Yanli7; Dong, Xiaoyi1; Zuo, Wenwen8; Green, Richard2; Jiang, Linhua3; Wang, Shu1; Wang, Ran3; Yue, Minghao1
Source PublicationASTROPHYSICAL JOURNAL
2016-09-20
Volume829Issue:1
DOI10.3847/0004-637X/829/1/33
Contribution Rank第5完成单位
Indexed BySCI
KeywordGalaxies: Active Galaxies: High-redshift Quasars: General
Abstract

This is the second paper in a series on a new luminous z similar to 5 quasar survey using optical and near-infrared colors. Here we present a new determination of the bright end of the quasar luminosity function (QLF) at z similar to 5. Combining. our 45 new quasars with previously known quasars that satisfy our selections, we construct the largest uniform luminous z similar to 5 quasar sample to date, with 99 quasars in the range of 4.7 <= z < 5.4 and -29 < M-1450 <= -26.8, within the Sloan Digital Sky Survey (SDSS) footprint. We use a modified 1/V-a method including flux limit correction to derive a binned QLF, and we model the parametric QLF using maximum likelihood estimation. With the faint-end slope of the QLF fixed as alpha = -2.03 from previous deeper samples, the best fit of our QLF gives a flatter bright end slope beta = -3.58 +/- 0.24 and a fainter break magnitude M-1450(*) = -26.98 +/- 0.23 than previous studies at similar redshift. Combined with previous work at lower and higher redshifts, our result is consistent with a luminosity evolution and density evolution model. Using the best-fit QLF, the contribution of quasars to the ionizing background at z similar to 5 is found to be 18%-45% with a clumping factor C of 2-5. Our sample suggests an evolution of radio loud fraction with optical luminosity but no obvious evolution with redshift.

Funding ProjectNSFC[11373008] ; NSFC[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] ; US NSF grant[AST 11-07682] ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Strategic Priority Research Program "The Emergence of Cosmological Structures"[XDB09000000] ; National Astronomical Observatories, Chinese Academy of Sciences ; 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
Funding OrganizationNSFC[11373008, 11533001] ; Strategic Priority Research Program
Language英语
Subject Area天文学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000385374500033
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL-SKY-SURVEY ; RADIO-LOUD FRACTION ; OPTICALLY SELECTED QUASARS ; SURVEY COMMISSIONING DATA ; ACTIVE GALACTIC NUCLEI ; STELLAR OBJECTS ; SPECTROSCOPIC SURVEY ; INTERGALACTIC MEDIUM ; VLA OBSERVATIONS ; DATA RELEASE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9745
Collection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
Corresponding AuthorYang, Jinyi
Affiliation1.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China
2.Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
3.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
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.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
7.School of Astronomy and Space Science, Sun Yat-Sen University, Guangzhou 510275, China
8.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
9.Stromlo Fellow.
Recommended Citation
GB/T 7714
Yang, Jinyi,Wang, Feige,Wu, Xue-Bing,et al. A SURVEY OF LUMINOUS HIGH-REDSHIFT QUASARS WITH SDSS AND WISE. II. THE BRIGHT END OF THE QUASAR LUMINOSITY FUNCTION AT z similar to 5[J]. ASTROPHYSICAL JOURNAL,2016,829(1).
APA Yang, Jinyi.,Wang, Feige.,Wu, Xue-Bing.,Fan, Xiaohui.,McGreer, Ian D..,...&Yue, Minghao.(2016).A SURVEY OF LUMINOUS HIGH-REDSHIFT QUASARS WITH SDSS AND WISE. II. THE BRIGHT END OF THE QUASAR LUMINOSITY FUNCTION AT z similar to 5.ASTROPHYSICAL JOURNAL,829(1).
MLA Yang, Jinyi,et al."A SURVEY OF LUMINOUS HIGH-REDSHIFT QUASARS WITH SDSS AND WISE. II. THE BRIGHT END OF THE QUASAR LUMINOSITY FUNCTION AT z similar to 5".ASTROPHYSICAL JOURNAL 829.1(2016).
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