Mathematics – Logic
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21944110p&link_type=abstract
American Astronomical Society, AAS Meeting #219, #441.10
Mathematics
Logic
Scientific paper
The James Webb Space Telescope (JWST) will soon enable us to probe galaxy formation at unexplored early times. Previous work has shown that the very first galaxies, i.e., galaxies inside halos with virial temperatures 104 K and masses 108 solar at redshifts z > 10, are generally too faint, by at least one order of magnitude, to be detected even in very deep exposures with JWST. The light collected with JWST will therefore be dominated by radiation from galaxies inside ten times more massive halos. We use cosmological zoomed smoothed particle hydrodynamics simulations to investigate the formation of galaxies inside such halos. An intriguing outcome of our simulations is the assembly of rotationally supported galactic gaseous disks. We address the impact of star formation on the disk assembly by solving the hydrodynamically coupled transport of ionizing radiation from internal and external ionizing sources. We discuss the prospects for observations of galaxies such as simulated here with the JWST. This research is supported by NASA through Astrophysics Theory and Fundamental Physics Program grants NNX08AL43G and NNX09AJ33G and through NSF grants AST-0708795 and AST-1009928. The simulations presented here were carried out at the Texas Advanced Computing Center (TACC).
Bromm Volker
Milosavljevic Milos
Pawlik Andreas
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