On the star formation efficiency in high redshift Lyman-α emitters

Abstract

We present semi-analytical models of high redshift Lyman-α emitters (LAEs) in order to constrain the star formation efficiency in those galaxies. Our supernova feedback induced star formation model along with Sheth-Tormman halo mass function correctly reproduces the shape, amplitude and the redshift evolution of UV and Lyman-α luminosity functions of LAEs in the redshift range z = 2 to 7.3. We show that the fraction of Lyman-α emitting galaxies increases with increasing redshifts reaching to unity just after the reionisation. However, we show that star formation efficiency in those LAEs does not show any redshift evolution within the uncertainty in available observations. This would have significant repercussion on the reionisation of the intergalactic medium.

References in corpus (22)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• 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 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
• The Direct Detection of Lyman-Continuum Emission from Star-forming Galaxies at z~3
• AGN-controlled cooling in elliptical galaxies
• Line Emitting Galaxies Beyond a Redshift of 7: An Improved Method for Estimating the Evolving Neutrality of the Intergalactic Medium
• Accelerated Evolution of Ly$\alpha$ Luminosity Function at $\text{z}\gtrsim 7$ Revealed by the Subaru Ultra-Deep Survey for Ly$\alpha$ Emitters at $\text{z}=7.3$
• Essential physics of early galaxy formation
• A Luminosity Function of Lyman Alpha Emitting Galaxies at Redshift 4.5
• Luminosity Functions of Lyman Alpha Emitting Galaxies and Cosmic Reionization of Hydrogen
• The CALYMHA survey: Lya luminosity function and global escape fraction of Lya photons at z=2.23
• Lyman Alpha Emitters at Redshift 5.7 in the COSMOS Field
• Lyman alpha Radiative Transfer in Cosmological Simulations using Adaptive Mesh Refinement
• Constraining the population of 6 < z < 10 star-forming galaxies with deep near-IR images of lensing clusters
• Lyman Alpha Emitters in the Hierarchically Clustering Galaxy Formation
• Signatures of reionization on Lyman alpha emitters
• An Empirically-Calibrated Model For Interpreting the Evolution of Galaxies During the Reionization Era
• Probing the star formation history using the redshift evolution of luminosity functions
• Constrained semi-analytical models of Galactic outflows
• Large-Scale Structure of Short-Lived LymanαEmitters

Cited by in corpus (1)

• Improved Fe II emission line models for AGN using new atomic datasets