| Title | The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: A Sample of 260 Ly alpha Emitters at Redshift z approximate to 5.7 |
| Authors | Ning, Yuanhang Jiang, Linhua Zheng, Zhen-Ya Wu, Jin Bian, Fuyan Egami, Eiichi Fan, Xiaohui Ho, Luis C. Shen, Yue Wang, Ran Wu, Xue-Bing |
| Affiliation | Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China Shanghai Astron Observ, CAS Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China European Southern Observ, Alonso de Cordova 3107,Casilla 19001, Santiago 19, Chile Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA Univ Illinois, Dept Astron, Urbana, IL 61801 USA Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA |
| Keywords | LUMINOSITY FUNCTION REIONIZATION Z=6.5 FIELD Z=5.7 END |
| Issue Date | Nov-2020 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | We present a spectroscopic survey of Ly alpha emitters (LAEs) at z 5.7 using the multiobject spectrograph M2FS on the Magellan Clay telescope. This is part of a high-redshift galaxy survey carried out in several well-studied deep fields. These fields have deep images in multiple UV/optical bands, including a narrow NB816 band that has allowed an efficient selection of LAE candidates at z 5.7. Our sample consists of 260 LAEs and covers a total effective area of more than 2 deg(2) on the sky. This is so far the largest (spectroscopically confirmed) sample of LAEs at this redshift. We use the secure redshifts and narrowband photometry to measure Ly alpha luminosities. We find that these LAEs span a Ly alpha luminosity range of alpha luminosity. Most of them have rest-frame equivalent widths between 20 and 300 A, and more luminous Ly alpha emission lines tend to have broader line widths. We detect a clear offset of similar to 20 A between the observed Ly alpha wavelength distribution and the NB816 filter transmission curve, which can be explained by the intergalactic medium absorption of continua blueward of Ly alpha in the high-redshift spectra. This sample is being used to study the Ly alpha luminosity function and galaxy properties at z approximate to 5.7. |
| URI | http://hdl.handle.net/20.500.11897/593242 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/abb705 |
| Indexed | SCI(E) |
| Appears in Collections: | 科维理天文与天体物理研究所 物理学院 |
