On the dependence between UV luminosity and Lyman-alpha equivalent width in high redshift galaxies

Abstract

We show that with the simple assumption of no correlation between the Ly-alpha equivalent width and the UV luminosity of a galaxy, the observed distribution of high redshift galaxies in an equivalent width - absolute UV magnitude plane can be reproduced. We further show that there is no dependence between Ly-alpha equivalent width and Ly-alpha luminosity in a sample of Ly-alpha emitters. The test was expanded to Lyman-break galaxies and again no dependence was found. Simultaneously, we show that a recently proposed lack of large equivalent width, UV bright galaxies (Ando et al. 2006) can be explained by a simple observational effect, based on too small survey volumes.

7 pages, 3 figures, 2 tables, accepted in MNRAS

References in corpus (15)

• 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
• Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
• Multi-Wavelength Constraints on the Cosmic Star Formation History from Spectroscopy: the Rest-Frame UV, H-alpha, and Infrared Luminosity Functions at Redshifts 1.9<z<3.4
• The End of the Reionization Epoch Probed by Ly-alpha Emitters at z=6.5 in the Subaru Deep Field
• Ly-alpha Emission-Line Galaxies at z = 3.1 in the Extended Chandra Deep Field South
• Protoclusters associated with z > 2 radio galaxies. I. Characteristics of high redshift protoclusters
• Diverging UV and Halpha fluxes of star forming galaxies predicted by the IGIMF theory
• Lyman-break galaxies at z~5 -I. First significant stellar mass assembly in galaxies that are not simply z~3 LBGs at higher redshift
• Deficiency of large equivalent width Lyman-alpha emission in luminous Lyman break galaxies at z~5-6?
• Lyman alpha emitting galaxies at 0.2 < z < 0.35 from GALEX spectroscopy
• Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3
• The GLARE Survey II. Faint z=6 Ly-alpha Line Emitters in the HUDF
• Very Massive Stars in High-Redshift Galaxies
• The Building the Bridge survey for z=3 Ly-alpha emitting galaxies II: Completion of the survey
• Lyman-alpha emission galaxies at a redshift of z = 5.7 in the FORS Deep Field

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• The Relationship Between Stellar Populations and Lyman Alpha Emission in Lyman Break Galaxies
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• The MUSE Hubble Ultra Deep Field Survey X. Ly$\alpha$ Equivalent Widths at $2.9<z<6.6$
• Physical Properties of Spectroscopically-Confirmed Galaxies at z >= 6. I. Basic Characteristics of the Rest-Frame UV Continuum and Lyman-alpha emission
• A Comprehensive Study of Ly$\alpha$ Emission in the High-redshift Galaxy Population
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• Observing the first galaxies
• J-PLUS: Unveiling the brightest-end of the Lyα luminosity function at 2.0<z<3.3 over 1000 deg^2
• Lyman-Alpha Emitter Galaxies at z ~ 2.8 in the Extended Chandra Deep Field-South: I. Tracing the Large-Scale Structure via Lyman-Alpha Imaging
• What do observations of the Lyman-alpha fraction tell us about reionization?
• Suppression of Low-mass Galaxy Formation around Quasars at z~2-3
• Correlations between H$\alpha$ Equivalent Width and Galaxy Properties at $z=0.47$: Physical or Selection-driven?
• Abundant Serendipitous Emission Line Sources with JWST/NIRSpec
• Design for the First Narrowband Filter for the Dark Energy Camera: Optimizing the LAGER Survey for z ~ 7 Galaxies
• A survey of Ly$\alpha$ emission around Damped Ly$\alpha$ absorbers at $z\approx 2$ with the Keck Cosmic Web Imager
• UV & Ly$\alpha$ halos of Ly$\alpha$ emitters across environments at z=2.84
• Stellar properties of z ~ 1 Lyman-break galaxies from ACS slitless grism spectra
• Lyman Alpha line properties at $z\simeq 3.78$ and their environmental dependence: a case study around a massive proto-cluster
• New Results from the Magellan IMACS Spectroscopic Lyman Alpha Survey: NICMOS Observations of Lyman Alpha emitters at z=5.7