The H II Region of the First Star

@article{Alvarez2005TheHI,
  title={The H II Region of the First Star},
  author={Marcelo A. Alvarez and Volker Bromm and Paul R. Shapiro},
  journal={The Astrophysical Journal},
  year={2005},
  volume={639},
  pages={621-632}
}
Simulations predict that the first stars in a ΛCDM universe formed at redshifts z > 20 in minihalos with masses of about 106 M☉. We have studied their radiative feedback by simulating the propagation of ionization fronts (I-fronts) created by these first Population III stars (M* = 15-500 M☉) at z = 20, within the density field of a cosmological simulation of primordial star formation, outward through the host minihalo and into the surrounding gas. A three-dimensional ray-tracing calculation… 
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References

SHOWING 1-10 OF 69 REFERENCES
The Structure and Evolution of Early Cosmological H II Regions
We study the formation and evolution of H II regions around the first stars formed at redshifts z = 10-30. We use a one-dimensional Lagrangian hydrodynamics code that self-consistently incorporates
RADIATION HYDRODYNAMIC EVOLUTION OF PRIMORDIAL H II REGIONS
We simulate the ionization environment of z ~ 20 luminous objects formed within the framework of the current CDM (cold dark matter) cosmology and compute their UV escape fraction. These objects are
The first miniquasar
We investigate the environmental impact of the first active galactic nuclei that may have formed ∼150 Myr after the big bang in low-mass ∼10 6 M θ minihaloes. Using ENZO, an adaptive-mesh refinement
Fossil H ii regions: self-limiting star formation at high redshift
Recent results from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite suggest that the intergalactic medium (IGM) was significantly reionized at redshifts as high as z ∼ 17. At this early
The Formation of the First Stars. I. The Primordial Star-forming Cloud
To constrain the nature of the very first stars, we investigate the collapse and fragmentation of primordial, metal-free gas clouds. We explore the physics of primordial star formation by means of
The Formation of the First Star in the Universe
TLDR
It is concluded that at most one massive metal-free star forms per pregalactic halo, consistent with recent abundance measurements of metal-poor galactic halo stars.
Forming a Primordial Star in a Relic H II Region
There has been considerable theoretical debate over whether photoionization and supernova feedback from the first Population III stars facilitate or suppress the formation of the next generation of
The Era of Massive Population III Stars: Cosmological Implications and Self-Termination
The birth and death of the first generation of stars have important implications for the thermal state and chemical properties of the intergalactic medium (IGM) in the early universe. Sometime after
Three Epochs of Star Formation in the High-Redshift Universe
We investigate the impact of an early population of massive stars on their surroundings. Dissociation of molecular hydrogen by strong UV emission from such stars is expected to produce a global
Forming the First Stars in the Universe: The Fragmentation of Primordial Gas.
TLDR
This work investigates the fragmentation properties of metal-free gas in the context of a hierarchical model of structure formation and finds that the gas dissipatively settles into a rotationally supported disk that has a very filamentary morphology.
...
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