220 citations · 1.7k across the 28 of their papers we have counts for
5 papers · 1 filter
Effect of radiative transfer on damped Lyman-alpha and Lyman limit systems in cosmological SPH simulations
Hidenobu Yajima, Jun-Hwan Choi, Kentaro Nagamine
We study the effect of local stellar radiation and UVB on the physical properties of DLAs and LLSs at z=3 using cosmological SPH simulations. We post-process our simulations with t…
Galaxy Formation in Heavily Overdense Regions at z~10: the Prevalence of Disks in Massive Halos
Emilio Romano-Diaz, Jun-Hwan Choi, Isaac Shlosman +1
Using a high-resolution cosmological numerical simulation, we have analyzed the evolution of galaxies at z~10 in a highly overdense region of the universe. These objects could repr…
Gamma-ray burst rate: high-redshift excess and its possible origins
Francisco J. Virgili, Bing Zhang, Kentaro Nagamine +1
Prompted by various analyses of long (Type II) GRB rates and their relationship to the cosmic star-formation history, metallicity and luminosity function evolution, we systematical…
Steep Faint-end Slopes of Galaxy Mass and Luminosity Functions at z>=6 and the Implications for Reionisation
Jason Jaacks, Jun-Hwan Choi, Kentaro Nagamine +2
We present the results of a numerical study comparing photometric and physical properties of simulated z=6-9 galaxies to the observations taken by the WFC3 instrument aboard the Hu…
On the inconsistency between the estimates of cosmic star formation rate and stellar mass density of high redshift galaxies
Jun-Hwan Choi, Kentaro Nagamine
There are mainly two different approaches to measure the cosmic star formation history: direct star formation rate density (SFRD) and stellar mass density rhostar as functions of r…