Starbursts in low-mass haloes at Cosmic Dawn. I. The critical halo mass for star formation

Abstract

The first stars, galaxies, star clusters, and direct-collapse black holes are expected to have formed in low-mass ($\sim$$10^5-10^9{M}_{\odot }$) haloes at Cosmic Dawn ($z\sim 10-30$) under conditions of efficient gas cooling, leading to gas collapse towards the centre of the halo. The halo mass cooling threshold has been analyzed by several authors using both analytical models and numerical simulations, with differing results. Since the halo number density is a sensitive function of the halo mass, an accurate model of the cooling threshold is needed for (semi-)analytical models of star formation at Cosmic Dawn. In this paper the cooling threshold mass is calculated (semi-)analytically, considering the effects of H${}_2$-cooling and formation (in the gas phase and on dust grains), cooling by atomic metals, Lyman-$\alpha$ cooling, photodissociation of H${}_2$ by Lyman-Werner photons (including self-shielding by H${}_2$), photodetachment of H${}^{-}$ by infrared photons, photoevaporation by ionization fronts, and the effect of baryon streaming velocities. We compare the calculations to several high-resolution cosmological simulations, showing excellent agreement. We find that in regions of typical baryon streaming velocities, star formation is possible in haloes of mass $\gtrsim 1-2\times 10^6{M}_{\odot }$ for $z\gtrsim 20$. By $z\sim 8$, the expected Lyman-Werner background suppresses star formation in all minihaloes below the atomic-cooling threshold ($T_{\mathrm{vir}}=10^4\text{K}$). The halo mass cooling threshold increases by another factor of $\sim$$4$ following reionization, although this effect is slightly delayed ($z\sim 4-5$) because of effective self-shielding.

arXiv comment22 pages, 10 figures. Accepted for publication in MNRAS

References in corpus (135)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• In the Beginning: The First Sources of Light and the Reionization of the Universe
• Radiative transfer in a clumpy universe: IV. New synthesis models of the cosmic UV/X-ray background
• Simulations of X-ray Clusters
• Cosmological Simulations with TreeSPH
• How small were the first cosmological objects?
• Structure of Stationary Photodissociation Fronts
• Gas-to-Dust mass ratios in local galaxies over a 2 dex metallicity range
• Simulations of Early Structure Formation: Primordial Gas Clouds
• The Faintest Dwarf Galaxies
• One Hundred First Stars : Protostellar Evolution and the Final Masses
• A New Calculation of the Recombination Epoch
• Massloss of galaxies due to a UV-background
• Modelling Primordial Gas in Numerical Cosmology
• Formation of Primordial Stars in a LCDM Universe
• Simulations on a Moving Mesh: The Clustered Formation of Population III Protostars
• Relative velocity of dark matter and baryonic fluids and the formation of the first structures
• Hydrodynamic Simulations of Galaxy Formation. II. Photoionization and the Formation of Low Mass Galaxies
• How exactly did the Universe become neutral?
• Dimensionless constants, cosmology and other dark matters
• The Birth of a Galaxy - III. Propelling reionisation with the faintest galaxies
• Simulations of Pregalactic Structure Formation with Radiative Feedback
• Second-Generation Objects in the Universe: Radiative Cooling and Collapse of Halos with Virial Temperatures Above 10^4 Kelvin
• Cosmological Formation of Low-Mass Objects
• Formation of the First Stars
• The Quenching of the Ultra-Faint Dwarf Galaxies in the Reionization Era
• Primordial Star Formation under the Influence of Far Ultraviolet Radiation: 1540 Cosmological Halos and the Stellar Mass Distribution
• Protostellar Collapse with Various Metallicities
• The Mass Spectrum of the First Stars
• Photoevaporation of Cosmological Minihalos during Reionization
• Supermassive Black Hole Formation by Direct Collapse: Keeping Protogalactic Gas H_2--Free in Dark Matter Halos with Virial Temperatures T_vir >~ 10^4 K
• Primordial Star Formation under Far-ultraviolet radiation
• The Photo-Evaporation of Dwarf Galaxies During Reionization
• Uncertainties in H2 and HD Chemistry and Cooling and their Role in Early Structure Formation
• The accretion history of dark matter halos III: A physical model for the concentration-mass relation
• Photoionization Feedback in Low--Mass Galaxies at High Redshift
• FIRE in the Field: Simulating the Threshold of Galaxy Formation
• Population III star formation in a Lambda CDM universe, I: The effect of formation redshift and environment on protostellar accretion rate
• A Cosmic UV/X-ray Background Model Update
• Population III star formation in a Lambda CDM universe, II: Effects of a photodissociating background
• Photodissociation of H2 in Protogalaxies: Modeling Self-Shielding in 3D Simulations
• Molecular hydrogen formation in the interstellar medium
• A systematic metallicity study of DustPedia galaxies reveals evolution in the dust-to-metal ratios
• Pre-reionization Fossils, Ultra-faint Dwarfs and the Missing Galactic Satellite Problem
• Be it therefore resolved: Cosmological Simulations of Dwarf Galaxies with Extreme Resolution
• Star formation at very low metallicity. I: Chemistry and cooling at low densities
• First Structure Formation: I. Primordial Star Forming Regions in hierarchical models
• Impact of the Relative Motion between the Dark Matter and Baryons on the First Stars
• Suppression of H_2 Cooling in the Ultraviolet Background
• The Chemistry of the Early Universe
• EDGE: the mass-metallicity relation as a critical test of galaxy formation physics
• The Formation Rates of Population III Stars and Chemical Enrichment of Halos during the Reionization Era
• Resolving the Formation of Protogalaxies. I. Virialization
• The Delay of Population III Star Formation by Supersonic Streaming Velocities
• The Dawn of Chemistry
• Why is the CMB fluctuation level 10^{-5}?
• Minihalo photoevaporation during cosmic reionization: evaporation times and photon consumption rates
• FIRE-3: Updated Stellar Evolution Models, Yields, & Microphysics and Fitting Functions for Applications in Galaxy Simulations
• Connecting the first galaxies with ultra faint dwarfs in the Local Group: chemical signatures of Population~III stars
• Effects of a Soft X-ray Background on Structure Formation at High Redshift
• Effect of Streaming Motion of Baryons Relative to Dark Matter on the Formation of the First Stars
• Baryonic impact on the dark matter distribution in Milky Way-size galaxies and their satellites
• Supersonic Gas Streams Enhance the Formation of Massive Black Holes in the Early Universe
• The Impact of the First Galaxies on Cosmic Dawn and Reionization
• The first generation of stars in LCDM cosmology
• The detailed structure and the onset of galaxy formation in low-mass gaseous dark matter haloes
• Simulation of primordial object formation
• StarBench: The D-type expansion of an HII region
• The Influence of Streaming Velocities on the Formation of the First Stars
• The Source Density and Observability of Pair-Instability Supernovae from the First Stars
• Cosmological Simulations of Early Blackhole Formation: Halo Mergers, Tidal Disruption, and the Conditions for Direct Collapse
• The influence of streaming velocities and Lyman-Werner radiation on the formation of the first stars
• Does Radiative Feedback by the First Stars Promote or Prevent Second Generation Star Formation?
• Cradles of the first stars: self-shielding, halo masses, and multiplicity
• Star Formation in the First Galaxies I: Collapse Delayed by Lyman-Werner Radiation
• Recovery from population III supernova explosions and the onset of second generation star formation
• Cosmological Implications of the Uncertainty in H- Destruction Rate Coefficients
• The Birth Mass Function of Pop III Stars
• A tale of two sites -- I: Inferring the properties of minihalo-hosted galaxies from current observations
• The Direct Collapse of a Massive Black Hole Seed Under the Influence of an Anisotropic Lyman-Werner Source
• HD and H2 formation in low-metallicity dusty gas clouds at high redshift
• Photoionisation Feedback in a Self-Gravitating, Magnetised, Turbulent Cloud
• A Common Origin for Globular Clusters and Ultra-faint Dwarfs in Simulations of the First Galaxies
• High-Redshift Star Formation in a Time-Dependent Lyman-Werner Background
• The critical dark matter halo mass for Population III star formation: dependence on Lyman-Werner radiation, baryon-dark matter streaming velocity, and redshift
• Formation of Sub-galactic Clouds under UV Background Radiation
• Metal-poor star formation triggered by the feedback effects from Pop III stars
• The Impact of HD Cooling on the Formation of the First Stars
• H_2 Suppression with Shocking Inflows: Testing a Pathway for Supermassive Black Hole Formation
• The Effects of Population III X-ray and Radio Backgrounds on the Cosmological 21-cm Signal
• Molecular hydrogen formation on dust grains in the high redshift universe
• The Persistence of Population III Star Formation
• Suppression of HD-cooling in protogalactic gas clouds by Lyman-Werner radiation
• Observational constraints on stellar feedback in dwarf galaxies
• The First Generation of Star-Forming Haloes
• Revised rate coefficients for H${}_2$ and H${}^{-}$ destruction by realistic stellar spectra
• Formation of globular clusters in atomic-cooling halos via rapid gas condensation and fragmentation during the epoch of reionization
• Seeding the Second Star: enrichment from population III, dust evolution, and cloud collapse
• Tracing the first stars and galaxies of the Milky Way
• A No-Go Theorem for Direct Collapse Black Holes Without a Strong Ultraviolet Background
• Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
• Forming massive seed black holes in high-redshift quasar host progenitors
• Simulating the formation of massive seed black holes in the early Universe. II: Impact of rate coefficient uncertainties
• The formation of massive Pop III stars in the presence of turbulence
• Beyond Jcrit: a critical curve for suppression of H2-cooling in protogalaxies
• How low does it go? Too few Galactic satellites with standard reionization quenching
• Formation and Disruption of Cosmological Low Mass Objects
• Direct collapse black hole formation via high-velocity collisions of protogalaxies
• The earliest stars and their relics in the Milky Way
• Formation of the first star clusters and massive star binaries by fragmentation of filamentary primordial gas clouds
• Eridanus II: A Fossil from Reionization with an Off-Center Star Cluster
• Impact of baryonic streaming velocities on the formation of supermassive black holes via direct collapse
• Population III Star Formation In Large Cosmological Simulations I. Halo Temporal and Physical Environment
• X-ray Twinkles and Pop III Stars
• Feedback from the IR Background in the Early Universe
• Effects of stellar-mass primordial black holes on first star formation
• What is the Maximum Mass of a Population III Galaxy?
• H2 self-shielding with non-LTE rovibrational populations: implications for cooling in protogalaxies
• Fragmentation inside atomic cooling haloes exposed to Lyman-Werner radiation
• How chemistry influences cloud structure, star formation, and the IMF
• Cosmological DCBH formation sites hostile for their growth
• First star formation in ultra-light particle dark matter cosmology
• Modelling the cosmological Lyman-Werner background radiation field in the Early Universe
• UV regulated star formation in high-redshift galaxies
• The role of Pop III stars and early black holes in the 21cm signal from Cosmic Dawn
• First estimate of the local value of the baryonic streaming velocity
• Bubble mapping with the Square Kilometer Array -- I. Detecting galaxies with Euclid, JWST, WFIRST and ELT within ionized bubbles in the intergalactic medium at z>6
• Photoevaporation of Minihalos during Cosmic Reionization: Primordial and Metal-Enriched Halos
• Fragmentation in Population III Galaxies formed through Ionizing Radiation
• The high-redshift tail of stellar reionization in LCDM is beyond the reach of the low-$\ell$ CMB
• Temperature and density dependent cooling function for H${}_2$ with updated H${}_2$/H collisional rates
• Constraining the non-gravitational scattering of baryons and dark matter with early cosmic structure formation
• Upper Limit on Star Formation and Metal Enrichment in Minihalos
• HI-shielding of ${\mathrm{H}}_2$ in UV-irradiated protogalaxies: suppression of the photodissociation rate

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• Signatures of Cosmic Ray Heating in 21-cm Observables
• Lyman-$\alpha$ feedback prevails at Cosmic Dawn: Implications for the first galaxies, stars, and star clusters
• The Impact of Molecular Hydrogen Cooling on the Galaxy Formation Threshold
• pyC${}^2$Ray: A flexible and GPU-accelerated Radiative Transfer Framework for Simulating the Cosmic Epoch of Reionization
• A Global Semi-Analytic Model of the First Stars and Galaxies Including Dark Matter Halo Merger Histories
• The influence of baryons on low-mass haloes
• Densities and mass assembly histories of the Milky Way satellites are not a challenge to $\Lambda$CDM
• Zero Metallicity with Zero CPU Hours: Masses of the First Stars on the Laptop
• HI-bearing dark galaxies predictions from constrained Local Group simulations: how many and where to find them
• The Effects of Dark Matter Annihilation and Dark Matter-Baryon Velocity Offsets at Cosmic Dawn
• Direct Collapse Black Hole Candidates from Decaying Dark Matter
• Mapping neutral islands during end stages of reionization with photometric intergalactic medium tomography
• The DORCHA suite: nature, nurture, and the phase space distribution of the Milky Way's high redshift progenitors today
• From Dark Matter Minihalos to Large-Scale Radiative Feedback: A Self-Consistent 3D Simulation of the First Stars and Galaxies using Neural Networks
• Mapping the z>=5 SiIV Column Density Distribution onto the Galaxy Stellar Mass Function Using the Cumulative Absorption Cross Section
• Impact of 21-cm foreground mitigation strategies on reionization power spectrum constraints