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Cosmic reionization by stellar sources: population III stars
(Oxford University Press, 2004)
We combine fast radiative transfer calculations with high-resolution hydrodynamical simulations to study an epoch of early hydrogen reionization by primordial stellar sources at redshifts 15less than or similar tozless ...
The Growth of H ii Regions During Reionization
(American Astronomical Society, 2004)
Is There a Missing Galaxy Problem at High Redshift?
(American Astronomical Society, 2004)
We study the evolution of the global stellar mass density in a Lambda cold dark matter (LambdaCDM) universe using two different types of hydrodynamic simulations (Eulerian total variation diminishing and smoothed particle ...
Hubble Space TelescopeObservations of NGC 6240: A Case Study of an Ultraluminous Infrared Galaxy with Obscured Activity
(American Astronomical Society, 2004)
We present results from a Hubble Space Telescope (HST) study of the morphology and kinematics of NGC 6240. This merging galaxy with a double nucleus is one of the nearest and best-studied ultraluminous infrared galaxies. ...
Ultraviolet Line Emission From Metals in the Low-redshift Intergalactic Medium
(American Astronomical Society, 2004)
We use a high-resolution cosmological simulation that includes hydrodynamics, multiphase star formation, and galactic winds to predict the distribution of metal line emission at z similar to 0 from the intergalactic medium ...
Searching for star formation beyond reionization
(American Astronomical Society, 2004)
The goal of searching back in cosmic time to find star formation during the epoch of reionization will soon be within reach. We assess the detectability of high-redshift galaxies by combining cosmological hydrodynamic ...
21 Centimeter Fluctuations from Cosmic Gas at High Redshifts
(American Astronomical Society, 2004)
The relatively large Thomson optical depth, tau(es), inferred recently from the WMAP observations suggests that the universe was reionized in a more complex manner than previously believed. However, the value Of T,, provides ...
The Cosmological Evolution of Metal Enrichment in Quasar Host Galaxies
(American Astronomical Society, 2004)
We study the gas metallicity of quasar hosts using cosmological hydrodynamic simulations of the LambdaCDM model. Galaxy formation in the simulations is coupled with a prescription for black hole activity, enabling us to ...
Observing the reionization epoch through 21-centimetre radiation
(Oxford University Press, 2004)
We study the observability of the reionization epoch through the 21-cm hyperfine transition of neutral hydrogen. We use a high-resolution cosmological simulation (including hydrodynamics) together with a fast radiative ...
The Era of Massive Population III Stars: Cosmological Implications and Self‐Termination
(American Astronomical Society, 2004)
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 recombination, the ...