Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5

	Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5
	Gong, Yan1,2 ; Cooray, Asantha 2; Silva, Marta B.3; Zemcov, Michael 4,5; Feng, Chang 2; Santos, Mario G.6,7; Dore, Olivier 5,8; Chen, Xuelei1,9,10
刊名	ASTROPHYSICAL JOURNAL
	2017-02-01
卷号	835 期号:2
关键词	cosmology: theory diffuse radiation intergalactic medium large-scale structure of universe
英文摘要	Intensity mapping is becoming a useful tool to study the large-scale structure of the universe through spatial variations in the integrated emission from galaxies and the intergalactic medium. We study intensity mapping of the H alpha 6563 angstrom, [O III] 5007 angstrom, [O II] 3727 angstrom, and H beta 4861 angstrom lines at 0.8 <= z <= 5.2. The mean intensities of these four emission lines are estimated using the observed luminosity functions (LFs), cosmological simulations, and the star formation rate density (SFRD) derived from observations at z less than or similar to 5. We calculate the intensity power spectra and consider the foreground contamination of other lines at lower redshifts. We use the proposed NASA small explorer SPHEREx (the Spectro-Photometer for the History of the universe, Epoch of Reionization, and Ices Explorer) as a case study for the detectability of the intensity power spectra of the four emission lines. We also investigate the cross-correlation with the 21 cm line probed by the Canadian Hydrogen Intensity Mapping Experiment (CHIME), Tianlai experiment and the Square Kilometer Array (SKA) at 0.8 <= z <= 2.4. We find both the auto and cross power spectra can be well measured for the H alpha, [O III] and [O II] lines at z less than or similar to 3, while it is more challenging for the H beta line. Finally, we estimate the constraint on the SFRD from intensity mapping, and find we can reach an accuracy higher than 7% at z less than or similar to 4, which is better than with the usual method of measurements using the LFs of galaxies.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STAR-FORMATION HISTORY ; ULTRAVIOLET LUMINOSITY DENSITY ; FORMING GALAXIES ; TO 0.8 ; REIONIZATION ; EPOCH ; EVOLUTION ; EMISSION ; HIZELS ; UNIVERSE
收录类别	SCI
语种	英语
WOS记录号	WOS:000401155400019
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8774]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 2.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA 3.Univ Groningen, Kapteyn Astron Inst, Landleven 12, NL-9747 AD Groningen, Netherlands 4.Rochester Inst Technol, Ctr Detectors, Sch Phys & Astron, Rochester, NY 14623 USA 5.CALTECH, NASA, Jet Prop Lab, 4800 Oak Grove Dr,MS 169-215, Pasadena, CA 91109 USA 6.Univ Western Cape, Dept Phys, ZA-7535 Cape Town, South Africa 7.SKA SA, Pk Rd, ZA-7405 Cape Town, South Africa 8.CALTECH, MC 249-17, Pasadena, CA 91125 USA 9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 10.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Gong, Yan,Cooray, Asantha,Silva, Marta B.,et al. Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5[J]. ASTROPHYSICAL JOURNAL,2017,835(2).
APA	Gong, Yan.,Cooray, Asantha.,Silva, Marta B..,Zemcov, Michael.,Feng, Chang.,...&Chen, Xuelei.(2017).Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5.ASTROPHYSICAL JOURNAL,835(2).
MLA	Gong, Yan,et al."Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5".ASTROPHYSICAL JOURNAL 835.2(2017).