A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8: Program Overview and a Sample of the Brightest Lyα Emitters

Linhua Jiang, Yue Shen, Fuyan Bian, Zhen Ya Zheng, Jin Wu, Grecco A. Oyarzún, Guillermo A. Blanc, Xiaohui Fan, Luis C. Ho, Leopoldo Infante, Ran Wang, Xue Bing Wu, Mario Mateo, John I. Bailey, Jeffrey D. Crane, Edward W. Olszewski, Stephen Shectman, Ian Thompson, Matthew G. Walker

Research output: Research - peer-reviewArticle

Abstract

We present a spectroscopic survey of high-redshift, luminous galaxies over four square degrees on the sky, aiming to build a large and homogeneous sample of Lyα emitters (LAEs) at and 6.5, and Lyman-break galaxies (LBGs) at . The fields that we choose to observe are well studied, such as by the Subaru XMM-Newton Deep Survey and COSMOS. They have deep optical imaging data in a series of broad and narrow bands, allowing for the efficient selection of galaxy candidates. Spectroscopic observations are being carried out using the multi-object spectrograph M2FS on the Magellan Clay telescope. M2FS is efficient enough to identify high-redshift galaxies, owing to its 256 optical fibers deployed over a circular field of view in diameter. We have observed ∼2.5 square degrees. When the program is completed, we expect to identify more than 400 bright LAEs at and 6.5, and a substantial number of LBGs at . This unique sample will be used to study a variety of galaxy properties and to search for large protoclusters. Furthermore, the statistical properties of these galaxies will be used to probe cosmic reionization. We describe the motivation, program design, target selection, and M2FS observations. We also outline our science goals, and present a sample of the brightest LAEs at and 6.5. This sample contains 32 LAEs with Lyα luminosities higher than 1043 erg s-1. A few of them reach ≥3 1043 erg s-1, comparable to the two most luminous LAEs known at , "CR7" and "COLA1." These LAEs provide ideal targets to study extreme galaxies in the distant universe.

LanguageEnglish (US)
Article number134
JournalAstrophysical Journal
Volume846
Issue number2
DOIs
StatePublished - Sep 10 2017

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erg
programme
emitters
galaxies
field of view
probe
clay
COSMOS
luminosity
fibre
science
XMM-Newton telescope
newton
clays
spectrographs
sky
narrowband
universe
optical fibers
telescopes

Keywords

  • cosmology: observations
  • galaxies: evolution
  • galaxies: formation
  • galaxies: high-redshift

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Jiang, L., Shen, Y., Bian, F., Zheng, Z. Y., Wu, J., Oyarzún, G. A., ... Walker, M. G. (2017). A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8: Program Overview and a Sample of the Brightest Lyα Emitters. Astrophysical Journal, 846(2), [134]. DOI: 10.3847/1538-4357/aa8561

A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8 : Program Overview and a Sample of the Brightest Lyα Emitters. / Jiang, Linhua; Shen, Yue; Bian, Fuyan; Zheng, Zhen Ya; Wu, Jin; Oyarzún, Grecco A.; Blanc, Guillermo A.; Fan, Xiaohui; Ho, Luis C.; Infante, Leopoldo; Wang, Ran; Wu, Xue Bing; Mateo, Mario; Bailey, John I.; Crane, Jeffrey D.; Olszewski, Edward W.; Shectman, Stephen; Thompson, Ian; Walker, Matthew G.

In: Astrophysical Journal, Vol. 846, No. 2, 134, 10.09.2017.

Research output: Research - peer-reviewArticle

Jiang, L, Shen, Y, Bian, F, Zheng, ZY, Wu, J, Oyarzún, GA, Blanc, GA, Fan, X, Ho, LC, Infante, L, Wang, R, Wu, XB, Mateo, M, Bailey, JI, Crane, JD, Olszewski, EW, Shectman, S, Thompson, I & Walker, MG 2017, 'A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8: Program Overview and a Sample of the Brightest Lyα Emitters' Astrophysical Journal, vol 846, no. 2, 134. DOI: 10.3847/1538-4357/aa8561
Jiang, Linhua ; Shen, Yue ; Bian, Fuyan ; Zheng, Zhen Ya ; Wu, Jin ; Oyarzún, Grecco A. ; Blanc, Guillermo A. ; Fan, Xiaohui ; Ho, Luis C. ; Infante, Leopoldo ; Wang, Ran ; Wu, Xue Bing ; Mateo, Mario ; Bailey, John I. ; Crane, Jeffrey D. ; Olszewski, Edward W. ; Shectman, Stephen ; Thompson, Ian ; Walker, Matthew G./ A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8 : Program Overview and a Sample of the Brightest Lyα Emitters. In: Astrophysical Journal. 2017 ; Vol. 846, No. 2.
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