The Lyman-alpha signature of the first galaxies

Abstract

We present the Cosmic Lyman-$\alpha$ Transfer code (COLT), a massively parallel Monte-Carlo radiative transfer code, to simulate Lyman-$\alpha$ (Ly$\alpha$) resonant scattering through neutral hydrogen as a probe of the first galaxies. We explore the interaction of centrally produced Ly$\alpha$ radiation with the host galactic environment. Ly$\alpha$ photons emitted from the luminous starburst region escape with characteristic features in the line profile depending on the density distribution, ionization structure, and bulk velocity fields. For example, anisotropic ionization exhibits a tall peak close to line centre with a skewed tail that drops off gradually. Idealized models of first galaxies explore the effect of mass, anisotropic H II regions, and radiation pressure driven winds on Ly$\alpha$ observables. We employ mesh refinement to resolve critical structures. We also post-process an ab initio cosmological simulation and examine images captured at various escape distances within the 1 Mpc${}^3$ comoving volume. Finally, we discuss the emergent spectra and surface brightness profiles of these objects in the context of high-$z$ observations. The first galaxies will likely be observed through the red damping wing of the Ly$\alpha$ line. Observations will be biased toward galaxies with an intrinsic red peak located far from line centre that reside in extensive H II super bubbles, which allows Hubble flow to sufficiently redshift photons away from line centre and facilitate transmission through the intergalactic medium (IGM). Even with gravitational lensing to boost the luminosity this preliminary work indicates that Ly$\alpha$ emission from stellar clusters within haloes of $M_{\mathrm{vir}}<10^9{\mathrm{M}}_{\odot }$ is generally too faint to be detected by the James Webb Space Telescope (JWST).

arXiv comment28 pages, 22 figures, MNRAS, in press

References in corpus (79)

• Planck 2013 results. XVI. Cosmological parameters
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• The James Webb Space Telescope
• Galactic Winds
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• Structure and Formation of Elliptical and Spheroidal Galaxies
• On the properties of massive Population III stars and metal-free stellar populations
• Observational constraints on Cosmic Reionization
• UV Luminosity Functions at z~4, 5, and 6 from the HUDF and other Deep HST ACS Fields: Evolution and Star Formation History
• The Abundance of Star-Forming Galaxies in the Redshift Range 8.5 to 12: New Results from the 2012 Hubble Ultra Deep Field Campaign
• The First Galaxies
• A Measurement of the Damping Tail of the Cosmic Microwave Background Power Spectrum with the South Pole Telescope
• 3D Lyman-alpha radiation transfer. I. Understanding Lyman-alpha line profile morphologies
• The Birth of a Galaxy: Primordial Metal Enrichment and Stellar Populations
• Generic Spectrum and Ionization Efficiency of a Heavy Initial Mass Function for the First Stars
• Spectroscopic Confirmation of Three z-Dropout Galaxies at z = 6.844 - 7.213: Demographics of Lyman-Alpha Emission in z ~ 7 Galaxies
• Herschel Detects a Massive Dust Reservoir in Supernova 1987A
• Dust emission from the most distant quasars
• Formation of the First Stars
• The Physics of the Intergalactic Medium
• Lyman Alpha Radiation From Collapsing Protogalaxies I: Characteristics of the Emergent Spectrum
• Spectroscopic confirmation of z~7 LBGs: probing the earliest galaxies and the epoch of reionization
• Lyman Alpha Emitting Galaxies as a Probe of Reionization
• The Atacama Cosmology Telescope: Temperature and Gravitational Lensing Power Spectrum Measurements from Three Seasons of Data
• Cosmological constraints from the X-ray gas mass fraction in relaxed lensing clusters observed with Chandra
• On the redshift-evolution of the Lyman-alpha escape fraction and the dust content of galaxies
• A Rapidly Star-forming Galaxy 700 Million Years After the Big Bang at z=7.51
• First Results from the Large Area Lyman Alpha Survey
• The Subaru Deep Field Project: Lyman$\alpha$ Emitters at Redshift of 6.6
• Lyman Alpha Radiative Transfer in a Multi-Phase Medium
• The First Galaxies: Chemical Enrichment, Mixing, and Star Formation
• Rapid formation of large dust grains in the luminous supernova SN 2010jl
• Predicted UV properties of very metal-poor starburst galaxies
• Production of dust by massive stars at high redshift
• Intergalactic Transmission and its Impact on the Lyα Line
• A Cool Dust Factory in the Crab Nebula: A Herschel Study of the Filaments
• Scattered Lyman-alpha Radiation Around Sources Before Cosmological Reionization
• The Contribution of the First Stars to the Cosmic Infrared Background
• Monte Carlo Simulation of Lyman Alpha Scattering and Application to Damped Lyman Alpha Systems
• Initial Conditions for Large Cosmological Simulations
• The Birth of a Galaxy. II. The Role of Radiation Pressure
• HETDEX pilot survey for emission-line galaxies - I. Survey design, performance, and catalog
• Lyman Alpha Galaxies: Primitive, Dusty or Evolved Galaxies?
• Radiative Transfer Modeling of Lyman Alpha Emitters. I. Statistics of Spectra and Luminosity
• The Origin of Dust in the Early Universe: Probing the Star Formation History of Galaxies by their Dust Content
• The Detectability of Lyman Alpha Emission from Galaxies during the Epoch of Reionization
• Detection of Lyman-alpha Emitting Galaxies at Redshift z=4.55
• Cosmic Infrared Background and Early Galaxy Evolution
• The Earliest Luminous Sources and the Damping Wing of the Gunn-Peterson Trough
• Ly-alpha Radiative Transfer in Cosmological Simulations and Application to a z~8 Emitter
• 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
• Confined Population III Enrichment and the Prospects for Prompt Second-Generation Star Formation
• Occurrence of Metal-free Galaxies in the Early Universe
• Expanded Search for z~10 Galaxies from HUDF09, ERS, and CANDELS Data: Evidence for Accelerated Evolution at z>8?
• The HETDEX Pilot Survey III: The Low Metallicities of High-Redshift Lyman Alpha Galaxies
• On the Use of Ly-alpha Emitters as Probes of Reionization
• Lyman alpha Radiative Transfer in Cosmological Simulations using Adaptive Mesh Refinement
• The Physics and Early History of the Intergalactic Medium
• The First Galaxies: Signatures of the Initial Starburst
• The First Galaxies: Assembly of Disks and Prospects for Direct Detection
• Lyman-alpha radiative transfer during the Epoch of Reionization: contribution to 21-cm signal fluctuations
• The visibility of Lyman Alpha Emitters during reionization
• Lyman alpha line formation in starbursting galaxies II. Extremely Thick, Dustless, and Static HI Media
• Metal Transport and Chemical Heterogeneity in Early Star Forming Systems
• Escape of Lyman-alpha and continuum photons from star-forming galaxies
• ART^2 : Coupling Lyman-alpha Line and Multi-wavelength Continuum Radiative Transfer
• The First Stars
• Lyman Alpha Driven Outflows Around Star Forming Galaxies
• The Spectrally Resolved Lyman-alpha Emission of Three Lyman-alpha Selected Field Galaxies at z~2.4 from the HETDEX Pilot Survey
• Detecting gravitationally lensed population III galaxies with the Hubble Space Telescope and the James Webb Space Telescope
• Revisiting The First Galaxies: The epoch of Population III stars
• The visibility of Lyman Alpha Emitters: constraining reionization, ionizing photons and dust
• Studying reionization with the next generation of Ly-alpha emitter surveys
• CLARA's view on the escape fraction of Lyman-Alpha photons in high redshift galaxies
• Effect of Intergalactic Medium on the Observability of Lyman Alpha Emitters during Cosmic Reionization
• Acceleration of Galactic Supershells by Lyman Alpha Radiation
• Lyman alpha emission from the first galaxies: Implications of UV backgrounds and the formation of molecules
• Lyman alpha emission from the first galaxies: Signatures of accretion and infall in the presence of line trapping

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• Fast, Slow, Early, Late: Quenching Massive Galaxies at z~0.8
• The THESAN project: properties of the intergalactic medium and its connection to Reionization-era galaxies
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• Lyman Radiation Hydrodynamics of Turbulent H II Regions in Molecular Clouds: A Physical Origin of LyC Leakage and the Associated Ly$\alpha$ Spectra
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• The THESAN project: Lyman-alpha emission and transmission during the Epoch of Reionization
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• The THESAN project: ionizing escape fractions of reionization-era galaxies
• RASCAS: RAdiation SCattering in Astrophysical Simulations
• Resonant line transfer in a fog: Using Lyman-alpha to probe tiny structures in atomic gas
• Lyman-$\alpha$ as a tracer of cosmic reionisation in the SPHINX radiation-hydrodynamics cosmological simulation
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• Deciphering Lyman-$\alpha$ Emission Deep into the Epoch of Reionisation
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• Evidence for a direct collapse black hole in the Lyman-alpha source CR7
• Exploring the nature of the Lyman-$\alpha$ emitter CR7
• A systematic study of the escape of LyC and Ly$\alpha$ photons from star-forming, magnetized turbulent clouds
• Chasing Lyman alpha-emitting galaxies at z = 8.8
• GN-z11: The environment of an AGN at $z=$10.603
• Lyα emission from galaxies in the Epoch of Reionization
• Star formation in the first galaxies - III. Formation, evolution, and characteristics of the first stellar cluster
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• The THESAN-ZOOM project: Burst, quench, repeat -- unveiling the evolution of high-redshift galaxies along the star-forming main sequence
• The imprint of cosmic ray driven outflow on Lyman-alpha spectra
• Arepo-MCRT: Monte Carlo Radiation Hydrodynamics on a Moving Mesh
• Effects of Spatial Discretization in Lyman-alpha Line Radiation Transfer Simulations
• Discrete diffusion Lyman-alpha radiative transfer
• The cosmic web in Lyman-alpha emission
• Real and counterfeit cores: how feedback expands halos and disrupts tracers of inner gravitational potential in dwarf galaxies
• Photon leaking or very hard ionizing radiation? Unveiling the nature of heII-emitters using the softness diagram
• The THESAN project: Lyman-alpha emitter luminosity function calibration
• The Origin and Evolution of Lyman-alpha Blobs in Cosmological Galaxy Formation Simulations
• Smoothed Particle Radiation Hydrodynamics: Two-Moment method with Local Eddington Tensor Closure
• Lyman-$\alpha$ feedback prevails at Cosmic Dawn: Implications for the first galaxies, stars, and star clusters
• Ly-alpha Radiative Transfer: A Stokes Vector Approach to Ly-alpha Polarization
• On the effect of Lyman alpha trapping during the initial collapse of massive black hole seeds
• The THESAN-ZOOM project: central starbursts and inside-out quenching govern galaxy sizes in the early Universe
• Resonant-line radiative transfer within power-law density profiles
• Mapping the ionized gas of the metal-poor HII galaxy PHL 293B with MEGARA
• The Lyman $\alpha$ Reference Sample XIV: Lyman $\alpha$ imaging of 45 low redshift star-forming galaxies and inferences on global emission
• The impact of Lyman-$\alpha$ emission line heating and cooling on the cosmic dawn 21-cm signal
• CMacIonize 2.0: a novel task-based approach to Monte Carlo radiation transfer
• Contribution of the first galaxies to the cosmic far-infrared/sub-millimeter background - I. Mean background level
• Lyman alpha Properties of Simulated Galaxies in Overdense Regions: Effects of Galactic Winds at z > 6
• A public grid of radiative transfer simulations for Lyman-alpha and metal lines in idealised galactic outflows
• Lyman-alpha resonant-line radiative transfer in expanding media
• A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements
• SEURAT: SPH scheme extended with ultraviolet line radiative transfer
• A Novel Solution for Resonant Scattering Using Self-Consistent Boundary Conditions
• Star Formation for Predictive Primordial Galaxy Formation