H alpha Emitting Galaxies at z similar to 0.6 in the Deep And Wide Narrow-band Survey

doi:10.3847/1538-4357/aab620

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	H alpha Emitting Galaxies at z similar to 0.6 in the Deep And Wide Narrow-band Survey
	Coughlin, Alicia 13,14; Rhoads, James E.13,15; Malhotra, Sangeeta 13,15; Probst, Ronald 1; Swaters, Rob 2,3; Tilvi, Vithal S.4,13; Zheng, Zhen-Ya 5,13; Finkelstein, Steven 6,7; Hibon, Pascale 8; Mobasher, Bahram 9
刊名	ASTROPHYSICAL JOURNAL
	2018-05-10
卷号	858 期号:2
关键词	Galaxies: Evolution Galaxies: Formation Galaxies: High-redshift Galaxies: Star Formation
ISSN号	0004-637X
DOI	10.3847/1538-4357/aab620
英文摘要	We present new measurements of the Ha luminosity function (LF) and star formation rate (SFR) volume density for galaxies at z similar to 0.62 in the COSMOS field. Our results are part of the Deep And Wide Narrow-band Survey (DAWN), a unique infrared imaging program with large areal coverage (similar to 1.1 deg(2) over five fields) and sensitivity (9.9 x 10(-18) erg cm(-2) s(-1) at 5 sigma). The present sample, based on a single DAWN field, contains 116 H alpha emission-line candidates at z similar to 0.62, 25% of which have spectroscopic confirmations. These candidates have been selected through the comparison of narrow and broad-band images in the infrared and through matching with existing catalogs in the COSMOS field. The dust-corrected LF is well described by a Schechter function with L-* = 10(42.6 +/- 0.92) erg s(-1), Phi() = 10(-3.32 +/- 0.93) Mpc(-3), L-Phi(*) = 10(39.40 +/- 0.15) erg s(-1) Mpc(-3), and alpha = -1.75 +/- 0.09. From this LF, we calculate a SFR density of rho(SFR) = 10(-1.37 +/- 0.08) M-circle dot yr(-1) Mpc(-3). We expect an additional cosmic variance uncertainty of similar to 20%. Both the faint end slope and luminosity density that we derive are consistent with prior results at similar redshifts, with reduced uncertainties. We also present an analysis of these H alpha emitters' sizes, which shows a direct correlation between the galaxies' sizes and their H alpha emission.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000431946700011
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32289]
专题	中国科学院上海天文台
通讯作者	Coughlin, Alicia
作者单位	1.Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA 2.Univ Maryland, Dept Astron, College Pk, MD 20742 USA 3.Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA 4.Texas A&M Univ, Dept Phys, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA 5.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Shanghai, Peoples R China 6.Univ Texas Austin, Dept Astron, 1 Univ Stn C1400, Austin, TX 78712 USA 7.Univ Texas Austin, McDonald Observ, 1 Univ Stn C1400, Austin, TX 78712 USA 8.European Southern Observ, Alonso de Cordova 3107,Casilla 19001, Santiago, Chile 9.Univ Calif Riverside, Riverside, CA 92521 USA 10.Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA
推荐引用方式 GB/T 7714	Coughlin, Alicia,Rhoads, James E.,Malhotra, Sangeeta,et al. H alpha Emitting Galaxies at z similar to 0.6 in the Deep And Wide Narrow-band Survey[J]. ASTROPHYSICAL JOURNAL,2018,858(2).
APA	Coughlin, Alicia.,Rhoads, James E..,Malhotra, Sangeeta.,Probst, Ronald.,Swaters, Rob.,...&Zabl, Johannes.(2018).H alpha Emitting Galaxies at z similar to 0.6 in the Deep And Wide Narrow-band Survey.ASTROPHYSICAL JOURNAL,858(2).
MLA	Coughlin, Alicia,et al."H alpha Emitting Galaxies at z similar to 0.6 in the Deep And Wide Narrow-band Survey".ASTROPHYSICAL JOURNAL 858.2(2018).