Lyman Alpha Emitters at Redshift 5.7 in the COSMOS Field

Abstract

We present results from a narrow-band optical survey of a contiguous area of 1.95 deg^2, covered by the Cosmic Evolution Survey (COSMOS). Both optical narrow-band (lambda_c = 8150 AA and Delta_lambda = 120 AA) and broad-band (B, V, g', r', i', and z') imaging observations were performed with the Subaru prime-focus camera, Suprime-Cam on the Subaru Telescope. We provide the largest contiguous narrow-band survey, targetting Ly alpha emitters (LAEs) at z~5.7. We find a total of 119 LAE candidates at z~5.7. Over the wide-area covered by this survey, we find no strong evidence for large scale clustering of LAEs. We estimate a star formation rate (SFR) density of ~7*10^-4 M_sun yr^-1 Mpc^-3 for LAEs at z~5.7, and compare it with previous measurements.

26 pages, 19 figures. to appear in the ApJ Supplement COSMOS Special Issue

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• The Cosmic Evolution Survey (COSMOS) -- Overview
• The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field
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• The Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: II. Survey Design and Sample Analysis
• Radio and millimeter properties of $z\sim 5.7$ Ly$\alpha$ emitters in the COSMOS field: limits on radio AGN, submm galaxies, and dust obscuration

Cited by in corpus (34)

• The Cosmic Evolution Survey (COSMOS) -- Overview
• The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
• The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field
• Identification of the brightest Lyα emitters at z=6.6: implications for the evolution of the luminosity function in the re-ionisation era
• The VIMOS Ultra-Deep Survey (VUDS): fast increase of the fraction of strong Lyman alpha emitters from z=2 to z=6
• On the Detectability of Lyman-alpha Emission in Star-forming Galaxies: The Role of Dust
• The CALYMHA survey: Lya luminosity function and global escape fraction of Lya photons at z=2.23
• Lyman alpha emitting galaxies at 0.2 < z < 0.35 from GALEX spectroscopy
• The escape of Lyman photons from a young starburst: the case of Haro 11
• Clustering of Lyman alpha emitters at z ~ 4.5
• Effect of the intergalactic environment on the observability of Ly-alpha emitters during reionization
• The H$\alpha$ Luminosity Function and Star Formation Rate at $z\approx 0.24$ in the Cosmos 2 Square-Degree Field
• Lyman Alpha Emitters in the Hierarchically Clustering Galaxy Formation
• A physical model for the evolving UV luminosity function of high redshift galaxies and their contribution to the cosmic reionization
• Signatures of reionization on Lyman alpha emitters
• The UV, Lyman-alpha, and dark matter halo properties of high redshift galaxies
• Exploring HeII$\lambda$1640 emission line properties at $z\sim 2-4$
• The [OII]3727 Luminosity function and Star Formation Rate at z~1.2 in the COSMOS 2 Square-degree Field and the Subaru Deep Field
• Serendipitous Discovery of an Overdensity of Lyman-Alpha Emitters at z~4.8 in the Cl1604 Supercluster Field
• Spectrophotometry with Hectospec, the MMT's Fiber-Fed Spectrograph
• Environmental Effects on the Star Formation Activity in Galaxies at z=1.2 in the COSMOS Field
• Lyman Alpha and MgII as Probes of Galaxies and their Environments
• A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5<z<6.8: Program Overview and a Sample of the Brightest Lyman-alpha Emitters
• The candidate cluster and protocluster catalog (CCPC) II: Spectroscopically identified structures spanning 2 < z < 6.6
• Two Lensed Lyman-alpha Emitting Galaxies at z~5
• Radio and millimeter properties of $z\sim 5.7$ Ly$\alpha$ emitters in the COSMOS field: limits on radio AGN, submm galaxies, and dust obscuration
• High-redshift voids in the excursion set formalism
• Void Probability Function of Simulated Surveys of high-redshift Lyman-Alpha Emitters
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• On the star formation efficiency in high redshift Lyman-α emitters
• The ALMA-CRISTAL Survey: Complex kinematics of the galaxies at the end of the Reionization Era
• Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly$\alpha$-emitters at $z\sim 9.3$
• The gMOSS: the galaxy survey and galaxy populations of the large homogeneous field
• Star Forming Galaxies at z > 5