NAOC Open IR
A Spectroscopic Survey of Ly alpha Emitters atz 3.1 over similar to 1.2 Deg(2)
Guo, Yucheng1,2; Jiang, Linhua1,2; Egami, Eiichi3; Ning, Yuanhang1,2; Zheng, Zhen-Ya4; Ho, Luis C.1,2
2020-10-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume902Issue:2Pages:13
AbstractWe present a spectroscopic survey of Ly alpha emitters (LAEs) atz 3.1 in the Subaru XMM-Newton Deep Survey Field. This field has deep imaging data in a series of broad and narrow bands, including two adjacent narrow bands NB497 and NB503 that have allowed us to efficiently select LAE candidates atz 3.1. Using spectroscopic observations on MMT Hectospec and Magellan M2FS, we obtained a sample of 166 LAEs atz 3.1 over an effective area of similar to 1.2 deg(2), including 16 previously known LAEs. This is so far the largest (spectroscopically confirmed) sample of LAEs at this redshift. We make use of the secure redshifts and multiband data to measure spectral properties such as Ly alpha luminosity and rest-frame UV slope. We derive a robust Ly alpha luminosity function (LF) that spans a luminosity range from similar to 10(42.0)to >10(43.5)erg s(-1). Significant overdense and underdense regions are detected in our sample, but the area coverage is wide enough to largely suppress the effect from such cosmic variance. Our Ly alpha LF is generally consistent with those from previous studies atz similar to 3.1. At the brightest end of the LF, there is a tentative detection of a density excess that is not well described by the Schechter function. The comparison with the LFs at other redshifts suggests that the Ly alpha LF does not show significant evolution at 2 z < 5. Finally, we build the composite spectra of the LAEs and detect the Nv lambda 1239 and Civ lambda lambda 1548,1551 doublet emission lines at significance of similar to 4 sigma, suggesting very hard radiation fields in (some of) these LAEs.
KeywordHigh-redshift galaxies Ly alpha galaxies Galaxy properties
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance
DOI10.3847/1538-4357/abb59a
WOS KeywordEMISSION-LINE GALAXIES ; DEEP SURVEY SXDS ; LUMINOSITY FUNCTION ; EMITTING GALAXIES ; RADIATIVE-TRANSFER ; ESCAPE FRACTION ; TO 2 ; REDSHIFT ; REIONIZATION ; EVOLUTION
Language英语
Funding ProjectNational Science Foundation of China[11721303] ; National Science Foundation of China[11890693] ; National Science Foundation of China[11991052] ; National Key R&D Program of China[2016YFA0400702] ; National Key R&D Program of China[2016YFA0400703] ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund[1503] ; National Astronomical Observatories of China[XDB09000000] ; Special Fund for Astronomy from the Ministry of Finance
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; Chinese Academy of Sciences (CAS) through a China-Chile Joint Research Fund ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000580930300001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82039
Collection中国科学院国家天文台
Corresponding AuthorJiang, Linhua
Affiliation1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
2.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
3.Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA
4.Shanghai Astron Observ, CAS Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Guo, Yucheng,Jiang, Linhua,Egami, Eiichi,et al. A Spectroscopic Survey of Ly alpha Emitters atz 3.1 over similar to 1.2 Deg(2)[J]. ASTROPHYSICAL JOURNAL,2020,902(2):13.
APA Guo, Yucheng,Jiang, Linhua,Egami, Eiichi,Ning, Yuanhang,Zheng, Zhen-Ya,&Ho, Luis C..(2020).A Spectroscopic Survey of Ly alpha Emitters atz 3.1 over similar to 1.2 Deg(2).ASTROPHYSICAL JOURNAL,902(2),13.
MLA Guo, Yucheng,et al."A Spectroscopic Survey of Ly alpha Emitters atz 3.1 over similar to 1.2 Deg(2)".ASTROPHYSICAL JOURNAL 902.2(2020):13.
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