Hα Emitting Galaxies at z?～?0.6 in the Deep And Wide Narrow-band Survey
文献类型：期刊论文
| 作者 | Coughlin,Alicia10,11; Rhoads,James E.11,12; Malhotra,Sangeeta11,12; Probst,Ronald13; Swaters,Rob1,14; Tilvi,Vithal S.2,11; Zheng,Zhen-Ya3,11; Finkelstein,Steven4; Hibon,Pascale5; Mobasher,Bahram6 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2018-05-10 |
| 卷号 | 858期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: evolution galaxies: formation galaxies: high-redshift galaxies: star formation |
| DOI | 10.3847/1538-4357/aab620 |
| 英文摘要 | Abstract We present new measurements of the Hα luminosity function (LF) and star formation rate (SFR) volume density for galaxies at z?～?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 (～1.1 deg2 over five fields) and sensitivity ( at 5σ). The present sample, based on a single DAWN field, contains 116 Hα emission-line candidates at z?～?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 erg s?1, Mpc?3, erg s?1 Mpc?3, and α?=??1.75?±?0.09. From this LF, we calculate a SFR density of ρSFR?=?10?1.37?±?0.08 M⊙ yr?1 Mpc?3. We expect an additional cosmic variance uncertainty of ～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 Hα emitters’ sizes, which shows a direct correlation between the galaxies’ sizes and their Hα emission. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-858-2-aab620 |
| 源URL | [http://119.78.226.72/handle/331011/32067]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | 1.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD 21218, USA 2.George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics, Texas A&M University, College Station, TX 77843, USA 3.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China 4.Department of Astronomy and McDonald Observatory, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712, USA 5.European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago, Chile 6.University of California, Riverside, USA 7.Joint Space-Science Institute, University of Maryland, College Park, MD 20742, USA 8.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, People's Republic of China 9.DARK Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Oe, Denmark 10.Chandler-Gilbert Community College, 2626 East Pecos Road, Chandler, AZ 85225-2499; alicia.coughlin@cgc.edu |
| 推荐引用方式 GB/T 7714 | Coughlin,Alicia,Rhoads,James E.,Malhotra,Sangeeta,等. Hα Emitting Galaxies at z?～?0.6 in the Deep And Wide Narrow-band Survey[J]. The Astrophysical Journal,2018,858(2). |
| APA | Coughlin,Alicia.,Rhoads,James E..,Malhotra,Sangeeta.,Probst,Ronald.,Swaters,Rob.,...&Zabl,Johannes.(2018).Hα Emitting Galaxies at z?～?0.6 in the Deep And Wide Narrow-band Survey.The Astrophysical Journal,858(2). |
| MLA | Coughlin,Alicia,et al."Hα Emitting Galaxies at z?～?0.6 in the Deep And Wide Narrow-band Survey".The Astrophysical Journal 858.2(2018). |
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