Deficiency of large equivalent width Lyman-alpha emission in luminous Lyman break galaxies at z~5-6?

Abstract

We report a deficiency of luminous Lyman break galaxies (LBGs) with a large rest-frame equivalent width (EW_rest) of Lyman-alpha emission at z~5-6. Combining our spectroscopic sample of LBGs at z~5 and those from the literature, we found that luminous LBGs at z~5-6 generally show weak Lyman-alpha emissions, while faint LBGs show a wide range of Lyman-alpha EW_rest and tend to have strong (EW_rest >20A) Lyman-alpha emissions; i.e., there is a deficiency of strong Lyman-alpha emission in luminous LBGs. There seems to be a threshold UV luminosity for the deficiency; it is M_1400 = -21.5 \~ -21.0 mag, which is close to or somewhat brighter than the M* of the UV luminosity function at z~5 and 6. Since the large EW_rest of Lyman-alpha emission can be seen among the faint LBGs, the fraction of Lyman-alpha emitters in LBGs may change rather abruptly with the UV luminosity. If the weakness of Lyman-alpha emission is due to dust absorption, the deficiency suggests that luminous LBGs at z=5-6 tend to be in dusty and more chemically evolved environments and started star formation earlier than faint ones, though other causes cannot be ruled out.

arXiv comment12 pages, 1 figure, ApJ(letters) in press: revised to correct references and some typographical errors

References in corpus (35)

• Rest-Frame Ultraviolet Spectra of z~3 Lyman Break Galaxies
• The Star Formation History of Field Galaxies
• The 'Forbidden' Abundance of Oxygen in the Sun
• The Rest-Frame Optical Properties of z~3 Galaxies
• Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
• Ly Alpha Emitters at z=5.7 in the Subaru Deep Field
• The Star Formation Rate of the Universe at z~6 from the Hubble Ultra Deep Field
• The Ultraviolet Spectroscopic Properties of Local Starbursts: Implications at High-Redshift
• Subaru Deep Survey II. Luminosity Functions and Clustering Properties of Lya Emitters at z=4.86 in the Subaru Deep Field
• The Subaru Deep Field Project: Lyman$\alpha$ Emitters at Redshift of 6.6
• Color-selected galaxies at z~6 in the Great Observatories Origins Deep Survey
• Subaru Deep Survey VI. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Clustering Properties
• Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6
• Current Performance and On-Going Improvements of the 8.2 m Subaru Telescope
• A Galaxy at z=5.34
• Candidates of z ~ 5.5--7 Galaxies in the HST Ultra Deep Field
• HST imaging and Keck Spectroscopy of z~6 I-band Drop-Out Galaxies in the ACS GOODS Fields
• Spitzer Imaging of i'-drop Galaxies: Old Stars at z~6
• Spectral Evidence for Widespread Galaxy Outflows at z>4
• Keck Spectroscopy and NICMOS Photometry of a Redshift z=5.60 Galaxy
• Rest-frame Ultraviolet-to-Optical Properties of Galaxies at z ~ 6 and 5 in the Hubble Ultra Deep Field: from Hubble to Spitzer
• Luminous Lyman Break Galaxies at z>5 and the Source of Reionization
• A z=5.34 Galaxy Pair in the Hubble Deep Field
• A Subaru Search for Lyman$\alpha$ Emitters at Redshift 5.7
• Clustering of Lyman Break Galaxies at z=4 and 5 in The Subaru Deep Field: Luminosity Dependence of The Correlation Function Slope
• The First Deep ACS Lyman alpha Images of Local Starburst Galaxies
• Number Density of Bright Lyman-Break Galaxies at z~6 in the Subaru Deep Field
• A Galactic Wind at z = 5.190
• Spitzer Constraints on the z=6.56 Galaxy Lensed by Abell 370
• Lyman Break Galaxies at z~5: Luminosity Function
• Lyman Break Galaxies at $z\sim 5$: Rest-Frame UV Spectra
• A Strong Lyman-alpha Emitter at z=6.33 in the Subaru Deep Field Selected as an i' Dropout
• UV Continuum Spectroscopy of a 6L* z=5.5 Starburst Galaxy
• Spectroscopy of i-Dropout Galaxies with an NB921-Band Depression in the Subaru Deep Field
• Spectroscopy and Stellar Populations of Star-forming Galaxies at z~3 in the Hubble Deep Field - South

Cited by in corpus (87)

• Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models
• 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
• Keck Spectroscopy of Faint 3<z<7 Lyman Break Galaxies: - I. New constraints on cosmic reionisation from the luminosity and redshift-dependent fraction of Lyman-alpha emission
• Revealing the High-Redshift Star Formation Rate with Gamma-Ray Bursts
• Extended Lyman alpha haloes around individual high-redshift galaxies revealed by MUSE
• The Great Observatories Origins Deep Survey - VLT/VIMOS Spectroscopy in the GOODS-South Field: Part II
• The Great Observatories Origins Deep Survey. VLT/VIMOS Spectroscopy in the GOODS-South Field
• Completing the Census of Ly-alpha Emitters at the Reionization Epoch
• The Evolution of Stellar Mass and the Implied Star Formation History
• Observations of the Lyman-$\alpha$ Universe
• Spectroscopic Observations of Lyman-Break Galaxies at Redshift ~ 4, 5 and 6 in the GOODS-South Field
• The Ly-alpha Properties of Faint Galaxies at z2-3 with Systemic Redshifts and Velocity Dispersions from Keck-MOSFIRE
• Identification of the brightest Lyα emitters at z=6.6: implications for the evolution of the luminosity function in the re-ionisation era
• The Spectroscopic Properties of Lyα-Emitters at z $\approx$ 2.7: Escaping Gas and Photons from Faint Galaxies
• The Relationship Between Stellar Populations and Lyman Alpha Emission in Lyman Break Galaxies
• Radiative Transfer Modeling of Lyman Alpha Emitters. I. Statistics of Spectra and Luminosity
• Properties of $z\sim 3-6$ Lyman Break Galaxies. II. Impact of nebular emission at high redshift
• The Lyman alpha Reference Sample: II. HST imaging results, integrated properties and trends
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization III. the Ly$\alpha$ Equivalent-width Distribution and Ionized Structures at $z>7$
• Narrowband imaging of Escaping Lyman-Continuum Emission in the SSA22 Field
• The VIMOS Ultra-Deep Survey (VUDS): fast increase of the fraction of strong Lyman alpha emitters from z=2 to z=6
• A remarkably high fraction of strong Ly_alpha emitters amongst luminous redshift 6.0<z<6.5 Lyman break galaxies in the UKIDSS Ultra-Deep Survey
• The VIMOS VLT Deep Survey: Star Formation Rate Density of Lya emitters from a sample of 217 galaxies with spectroscopic redshifts 2<z<6.6
• The Evolution of Ly-alpha Emitting Galaxies Between z = 2.1 and z = 3.1
• Lyman-break galaxies at z~5 -I. First significant stellar mass assembly in galaxies that are not simply z~3 LBGs at higher redshift
• Spitzer Constraints on the Stellar Populations of Lyman-Alpha Emitting Galaxies at z = 3.1
• The Role of the Dust in Primeval Galaxies: A Simple Physical Model for Lyman Break Galaxies and Lyman Alpha Emitters
• Lyman alpha emitting galaxies at 0.2 < z < 0.35 from GALEX spectroscopy
• A VLT/FORS2 view at $z\sim 6$: Lyman-$\alpha$ emitter fraction and galaxy physical properties at the edge of the epoch of cosmic reionization
• Spectroscopic properties of luminous Lyman-α emitters at $z\approx 6-7$ and comparison to the Lyman-break population
• The physical properties of Lyalpha emitting galaxies: not just primeval galaxies?
• The MUSE Hubble Ultra Deep Field Survey X. Ly$\alpha$ Equivalent Widths at $2.9<z<6.6$
• A New Constraint on Reionization from Evolution of the Ly$\alpha$ Luminosity Function at $z\sim 6-7$ Probed by a Deep Census of $z=7.0$ Ly$\alpha$ Emitter Candidates to 0.3 $L^{\ast }$
• The Evolution of the Lyman-Alpha Luminosity Function During Reionization
• Lya escape from z~0.03 star-forming galaxies: the dominant role of outflows
• SILVERRUSH. VI. A simulation of Ly$\alpha$ emitters in the reionization epoch and a comparison with Subaru Hyper Suprime-Cam survey early data
• Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3
• Physical Properties of Spectroscopically-Confirmed Galaxies at z >= 6. I. Basic Characteristics of the Rest-Frame UV Continuum and Lyman-alpha emission
• The Stellar Populations of Lyman Break Galaxies at z~5
• The MUSE Hubble Ultra Deep Field Survey VIII : Extended Lyman-alpha haloes around high-redshift star-forming galaxies
• The GLARE Survey II. Faint z=6 Ly-alpha Line Emitters in the HUDF
• The unusual NIV]-emitter galaxy GDS J033218.92-275302.7: star formation or AGN-driven winds from a massive galaxy at z=5.56
• Morphologies of ~190,000 Galaxies at z=0-10 Revealed with HST Legacy Data. III. Continuum Profile and Size Evolution of Lya Emitters
• The UV, Lyman-alpha, and dark matter halo properties of high redshift galaxies
• On the influence of physical galaxy properties on Lyman-alpha escape in star-forming galaxies
• A New Constraint on the Ly$\alpha$ Fraction of UV Very Bright Galaxies at Redshift 7
• What is the Physical Origin of Strong Lya Emission? I. Demographics of Lya Emitter Structures
• Photometric properties of Ly alpha emitters at z=4.86 in the COSMOS 2 square degree field
• Lyman Alpha Emitters in Hierarchical Galaxy Formation II. UV Continuum Luminosity Function and Equivalent Width Distribution
• Modelling high redshift Lyman-alpha Emitters
• The MUSE Hubble Ultra Deep Field Survey: XII. MgII emission and absorption in star-forming galaxies
• Very Massive Stars in High-Redshift Galaxies
• On Lya emission in z~3-6 UV-selected galaxies
• Lyα Equivalent Width Distribution of Lyα Emitting Galaxies at Redshift z $\sim$ 4.5
• Lyman Break Galaxies at z~5: Rest-frame UV Spectra II
• A contribution to the selection of emission-line galaxies using narrow-band filters in the optical airglow windows
• On the dependence between UV luminosity and Lyman-alpha equivalent width in high redshift galaxies
• Searching for candidates of Lyman continuum sources - revisiting the SSA22 field
• Ly$\alpha$ Emitters with Very Large Ly$\alpha$ Equivalent Widths, EW${}_0$(Ly$\alpha$) $\simeq 200-400$ Å, at $z\sim 2$
• Stellar Populations of Lyman-alpha Emitters at z=4.86: A Comparison to $z\sim 5$ LBGs
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization I. Constraining the Ly$\alpha$ Equivalent Width Distribution at 6.0 < $z$ < 7.0
• Lyman Alpha and MgII as Probes of Galaxies and their Environments
• First HETDEX Spectroscopic Determinations of Ly$\alpha$ and UV Luminosity Functions at $z=2-3$: Bridging a Gap Between Faint AGN and Bright Galaxies
• Large-scale environment of $z\sim 5.7$ CIV absorption systems -II. Spectroscopy of Lyman-$\alpha$ emitters
• A 52 hours VLT/FORS2 spectrum of a bright z~7 HUDF galaxy: no Ly-alpha emission
• What do observations of the Lyman-alpha fraction tell us about reionization?
• High-redshift Ly alpha emitters with a large equivalent width: Properties of i-dropout galaxies with an NB921-band depression in the Subaru Deep Field
• Understanding the redshift evolution of the luminosity functions of Lyman-alpha emitters
• CLEAR: Boosted Ly$\alpha$ Transmission of the Intergalactic Medium in UV bright Galaxies
• The dominant origin of diffuse Ly$\alpha$ halos around LAEs explored by SED fitting and clustering analysis
• X-ray Constraints on the Lyman-Alpha Escape Fraction
• Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). III. Discovery of a z = 4.72 Radio Galaxy with Lyman Break Technique
• The evolution of the UV luminosity and stellar mass functions of Lyman-alpha emitters from z~2 to z~6
• Correlations between H$\alpha$ Equivalent Width and Galaxy Properties at $z=0.47$: Physical or Selection-driven?
• MUSE observations towards the lensing cluster A2744: Intersection between the LBG and LAE populations at z $\sim$ 3-7
• GTC Observations of an Overdense Region of LAEs at z=6.5
• Abundant Serendipitous Emission Line Sources with JWST/NIRSpec
• Evolution of the Lyman-α emitting fraction and UV properties of lensed star-forming galaxies between 2.9 < z < 6.7
• Stellar Populations of Lyman-alpha Emitting Galaxies in the HETDEX Survey I: An Analysis of LAEs in the GOODS-N Field
• Introducing the Texas Euclid Survey for Lyman Alpha (TESLA) Survey: Initial Study Correlating Galaxy Properties to Lyman-Alpha Emission
• UV & Ly$\alpha$ halos of Ly$\alpha$ emitters across environments at z=2.84
• Lyman Alpha line properties at $z\simeq 3.78$ and their environmental dependence: a case study around a massive proto-cluster
• Observations of Ly$\alpha$ Emitters at High Redshift
• Lyman Break Galaxies at z~5: Rest-Frame UV Spectra. III
• New Results from the Magellan IMACS Spectroscopic Lyman Alpha Survey: NICMOS Observations of Lyman Alpha emitters at z=5.7
• Subaru Studies of the Cosmic Dawn
• Luminosity Dependent Evolution of Lyman Break Galaxies from redshift 5 to 3